cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.57760/sciencedb.03087
title: Low-NoiseCompoundRingCavityFiberLaserwithStable Single-Longitudinal-ModeOperation
title: 稳定单纵模运转的低噪声环形复合腔光纤激光器

description: Low-noisenarrow-linewidthsingle-longitudinal-mode SLM lasershaveseveralimportantapplications inmanyfields suchasgravitationalwavedetection atomicandmolecularphysics timeandfrequencytransfer and precisionmeasurement Currently SLM fiberlasersaredividedintothree maintypes distributedfeedback distributedBraggreflection DBR andringcavitylaser Amongthem theringcavitylaser whichemploysalong cavitydesign facilitatesincreaseincavitygaintoimproveoutputpowerusingrelativelyhigh-gainfibers Aring cavitylasercanalsobeusedinotherapplicationssuchasfrequencytuningandfeedbackcontrolbysimplyinserting opticalcomponentsintoacavity Moreover theQ-valueofafiber-laserresonatorcanbeincreasedbyemployinga longringcavity Thislongcavityhelpsinobtaininganarrowfree-runninglaserlinewidthandreducestherelaxation oscillationfrequencyofthelaser Thisisusefulinsuppressingarelaxationoscillationpeakthroughphotoelectric feedbackcontrol However alongringcavityiseasilyaffectedbecauseofexternal-environmentnoisedisturbances whichleadstoSLMinstability e g modehopping Thusfar theachievedcontinuousoperationtimeofafreerunningcompoundringcavityfiberlaser without modehoppingisonlyseveralhours Therefore althoughin principal afiber-lasersourceexhibitsexcellentperformance itcannotmeetpracticalapplicationrequirements In thisstudy alow-noisenarrow-linewidth-ringerbium-dopedfiberlaseroperatinginaSLM and maintainingits polarizationisreported 
description: Low-noisenarrow-linewidthsingle-longitudinal-mode SLM lasershaveseveralimportantapplications inmanyfields suchasgravitationalwavedetection atomicandmolecularphysics timeandfrequencytransfer and precisionmeasurement Currently SLM fiberlasersaredividedintothree maintypes distributedfeedback distributedBraggreflection DBR andringcavitylaser Amongthem theringcavitylaser whichemploysalong cavitydesign facilitatesincreaseincavitygaintoimproveoutputpowerusingrelativelyhigh-gainfibers Aring cavitylasercanalsobeusedinotherapplicationssuchasfrequencytuningandfeedbackcontrolbysimplyinserting opticalcomponentsintoacavity Moreover theQ-valueofafiber-laserresonatorcanbeincreasedbyemployinga longringcavity Thislongcavityhelpsinobtaininganarrowfree-runninglaserlinewidthandreducestherelaxation oscillationfrequencyofthelaser Thisisusefulinsuppressingarelaxationoscillationpeakthroughphotoelectric feedbackcontrol However alongringcavityiseasilyaffectedbecauseofexternal-environmentnoisedisturbances whichleadstoSLMinstability e g modehopping Thusfar theachievedcontinuousoperationtimeofafreerunningcompoundringcavityfiberlaser without modehoppingisonlyseveralhours Therefore althoughin principal afiber-lasersourceexhibitsexcellentperformance itcannotmeetpracticalapplicationrequirements In thisstudy alow-noisenarrow-linewidth-ringerbium-dopedfiberlaseroperatinginaSLM and maintainingits polarizationisreported
DOI: 10.57760/sciencedb.03088
title: 280mHz Linewidth DBR Fiber Laser Based on PDH Frequency Stabilization with Ultrastable Cavity
title: 基于超稳腔 PDH 稳频的280mHz线宽 DBR 光纤激光器

description: Ultrastablelow-noiseultranarrowlinewidthlaserlightsourcehasa widerangeofapplicationsin precisionmeasurement opticalatomicclock time-frequencytransmission andlow-noisemicrowavegeneration UltrastablecavityPound-Drever-Hall PDH frequencystabilizationtechnologyisoneofthemostimportantsolutions forobtainingsuchultrastablelasers Basedonthis thelinewidthofthedistributedfeedback DFB single-frequency fiberlaserhasreachedtheorderofmillihertz Inadditiontotheperformancesoftheultrastablecavityandservo system theavailablelinewidthandfrequencyinstabilityoftheultrastablefiberlaserdependontheperformancesof thelinewidth frequencydriftandnoiselevelofthefree-runningfiberlaser andthelaserfrequency-tuning mechanism AlthoughmanyresearchinstitutionsinChinahavedevelopedsingle-longitudinal-modefiberlaserswith frequency-tuningmechanismsandthelaserfrequencyhasbeenstabilizedwithinahundredkilohertzforalongtime bythesaturated-absorptionfrequencystabilizationtechnologybasedonfinetransitionspectrallinesofgasmolecules home-madesingle-frequencyfiberlaserhasnotbeenappliedtoultrastablecavity PDH frequencystabilization technologytoobtainsubhertz-linewidthultrastablefiberlasersource Therefore itisverynecessarytoinvestigate thePDHfrequencystabilizationwithsuchhome-madesingle-frequencyfiberlasers  
description: Ultrastablelow-noiseultranarrowlinewidthlaserlightsourcehasa widerangeofapplicationsin precisionmeasurement opticalatomicclock time-frequencytransmission andlow-noisemicrowavegeneration UltrastablecavityPound-Drever-Hall PDH frequencystabilizationtechnologyisoneofthemostimportantsolutions forobtainingsuchultrastablelasers Basedonthis thelinewidthofthedistributedfeedback DFB single-frequency fiberlaserhasreachedtheorderofmillihertz Inadditiontotheperformancesoftheultrastablecavityandservo system theavailablelinewidthandfrequencyinstabilityoftheultrastablefiberlaserdependontheperformancesof thelinewidth frequencydriftandnoiselevelofthefree-runningfiberlaser andthelaserfrequency-tuning mechanism AlthoughmanyresearchinstitutionsinChinahavedevelopedsingle-longitudinal-modefiberlaserswith frequency-tuningmechanismsandthelaserfrequencyhasbeenstabilizedwithinahundredkilohertzforalongtime bythesaturated-absorptionfrequencystabilizationtechnologybasedonfinetransitionspectrallinesofgasmolecules home-madesingle-frequencyfiberlaserhasnotbeenappliedtoultrastablecavity PDH frequencystabilization technologytoobtainsubhertz-linewidthultrastablefiberlasersource Therefore itisverynecessarytoinvestigate thePDHfrequencystabilizationwithsuchhome-madesingle-frequencyfiberlasers
DOI: 10.57760/sciencedb.03090
title: Measurement Technique for Broadband Frequency and Intensity Noise of Single-Frequency Laser
title: 单频激光宽频段频率和强度噪声测量技术

description: A standard measurement technique of laser noise in the broad frequency band from mHz to MHz is reported. The frequency and intensity noise characteristics of single frequency laser in the wide frequency band from mHz to MHz are measured in a standardized way by developing a correlation delay self heterodyne frequency noise measurement device based on Michelson fiber interferometer and an optical heterodyne beat frequency measurement device with calibration function, combined with standard instruments such as spectrum analyzer and fast Fourier transform analyzer, and the accuracy of the measurement results is verified. This measurement technology is expected to be applied to laser noise evaluation in gravitational wave detection and precision measurement. 
description: A standard measurement technique of laser noise in the broad frequency band from mHz to MHz is reported. The frequency and intensity noise characteristics of single frequency laser in the wide frequency band from mHz to MHz are measured in a standardized way by developing a correlation delay self heterodyne frequency noise measurement device based on Michelson fiber interferometer and an optical heterodyne beat frequency measurement device with calibration function, combined with standard instruments such as spectrum analyzer and fast Fourier transform analyzer, and the accuracy of the measurement results is verified. This measurement technology is expected to be applied to laser noise evaluation in gravitational wave detection and precision measurement.
DOI: 10.57760/sciencedb.03091
title: Sideband-Locked High-Power 780nm Laser Source for Precise Measurement Based on Rb Atoms
title: 面向 Rb原子精密测量的边带锁定780nm 高功率激光源

description: A 780 nm high power laser source prototype for Rb atomic precision measurement is reported. The prototype uses a single 1560nm fiber laser with linear polarization, narrow linewidth and broadband tunable frequency as the seed source. By effectively improving the output power of the fiber amplifier, the 780nm laser power generated by PPLN frequency doubling is up to 2.25W. With the saturated absorption frequency stabilization technology of sideband locking, the center frequency of the high power 780nm laser can be stabilized within ± 150kHz for a long time, and it can accurately tune 1.2GHz, with the linear polarization up to 23dB. The prototype is easy to operate and can be transported, which is very suitable for precise measurement of Rb atoms. 
description: A 780 nm high power laser source prototype for Rb atomic precision measurement is reported. The prototype uses a single 1560nm fiber laser with linear polarization, narrow linewidth and broadband tunable frequency as the seed source. By effectively improving the output power of the fiber amplifier, the 780nm laser power generated by PPLN frequency doubling is up to 2.25W. With the saturated absorption frequency stabilization technology of sideband locking, the center frequency of the high power 780nm laser can be stabilized within ± 150kHz for a long time, and it can accurately tune 1.2GHz, with the linear polarization up to 23dB. The prototype is easy to operate and can be transported, which is very suitable for precise measurement of Rb atoms.
DOI: 10.57760/sciencedb.03092
title: The infrared comb is generated by the difference of fundamental frequency of femtosecond mode-locked fiber laser pulse
title: 基于飞秒锁模光纤激光脉冲基频光的差频产生红外光梳

description: A fiber differential frequency generation (DFG) infrared comb based on femtosecond mode-locked fiber laser pulse fundamental frequency light and its development technology are reported. Based on the self-developed repetition frequency locked 200 MHz femtosecond mode-locked erbium-doped fiber laser, the length of near zero dispersion OFS fiber (model: OFS-980-20) is optimized through chirped pulse fiber amplification and supercontinuum generation technology, and the accurate synchronous fundamental frequency bicolor pulse is obtained by combining the adjustable delay line; Using GaSe as a nonlinear crystal and optical rectification technology, a DFG infrared optical comb with a maximum spectral width of 1.3 µ m can be produced, which can be tuned broadly in the range of 6-10 µ m. This optical fiber far infrared comb is expected to play an important role in the field of precise measurement of molecular spectra. 
description: A fiber differential frequency generation (DFG) infrared comb based on femtosecond mode-locked fiber laser pulse fundamental frequency light and its development technology are reported. Based on the self-developed repetition frequency locked 200 MHz femtosecond mode-locked erbium-doped fiber laser, the length of near zero dispersion OFS fiber (model: OFS-980-20) is optimized through chirped pulse fiber amplification and supercontinuum generation technology, and the accurate synchronous fundamental frequency bicolor pulse is obtained by combining the adjustable delay line; Using GaSe as a nonlinear crystal and optical rectification technology, a DFG infrared optical comb with a maximum spectral width of 1.3 µ m can be produced, which can be tuned broadly in the range of 6-10 µ m. This optical fiber far infrared comb is expected to play an important role in the field of precise measurement of molecular spectra.
DOI: 10.57760/sciencedb.03093
title: The method for quantifying the relative competitive advantage of the two invasive plants under co-invasion and the co-invasion combined effect
title: The method for quantifying the relative competitive advantage of the two invasive plants under co-invasion and the co-invasion combined effect

description: The method for quantifying the relative competitive advantage of the two invasive plants under co-invasion and the co-invasion combined effect
description: The method for quantifying the relative competitive advantage of the two invasive plants under co-invasion and the co-invasion combined effect
DOI: 10.57760/sciencedb.j00052.00033
title: The role of norm understanding in third-party punishment and its time course
title: The role of norm understanding in third-party punishment and its time course

description: This dataset is about Chinese's norm understanding and their third-party punishment. It includes one behavioral experiment and one EEG experiment.
description: This dataset is about Chinese's norm understanding and their third-party punishment. It includes one behavioral experiment and one EEG experiment.
DOI: 10.57760/sciencedb.j00143.00052
title: Plants of Kildin Island, Barents Sea
title: Plants of Kildin Island, Barents Sea

description: Pictures of the plants decribed on the Kildin Island, Barents Sea.
description: Pictures of the plants decribed on the Kildin Island, Barents Sea.
DOI: 10.57760/sciencedb.03096
title: Optimal chlorophyll fluorescence parameter selection for rapid and sensitive detection of lead toxicity to marine microalgae Nitzschia closterium based on chlorophyll fluorescence technology
title: 基于叶绿素荧光技术快速灵敏检测铅对海洋微藻毒性的最佳叶绿素荧光参数选择

description: This data set includes the Fv/Fm data of Nitzschia closterium exposed to different concentrations of Pb within 8 hours, the dose effect relationship data between Fv/Fm inhibition rate and Pb concentration at different exposure times, the changes of four different photosynthetic fluorescence parameters with PAR when Nitzschia closterium exposed to different concentrations of Pb for 2h, the effects of PAR intensity on four photosynthetic fluorescence parameters of Nitzschia closterium exposed to different concentrations of Pb for 2h, four kinds of photosynthetic fluorescence parameter values of Nitzschia closterium exposed to different concentrations of Pb for 2-8h. 
description: This data set includes the Fv/Fm data of Nitzschia closterium exposed to different concentrations of Pb within 8 hours, the dose effect relationship data between Fv/Fm inhibition rate and Pb concentration at different exposure times, the changes of four different photosynthetic fluorescence parameters with PAR when Nitzschia closterium exposed to different concentrations of Pb for 2h, the effects of PAR intensity on four photosynthetic fluorescence parameters of Nitzschia closterium exposed to different concentrations of Pb for 2h, four kinds of photosynthetic fluorescence parameter values of Nitzschia closterium exposed to different concentrations of Pb for 2-8h.
DOI: 10.57760/sciencedb.03097
title: Optical frequency combs based on a perioddoubling mode-locked Er-doped fiber laser
title: 基于倍周期锁模掺铒光纤激光器的光频梳

description: The phase locking mechanism and results of frequency comb based on double period mode locked (PD-ML) fiber laser are studied. Mode locked fiber lasers are designed to switch from basic period mode locking (FML) to PD-ML with similar output pulses by simply changing the pump. The experimental results show that the new comb generated in PD-ML has a strong correlation with the original teeth, and has a consistent carrier envelope offset (CEO) frequency. Therefore, the carrier envelope offset frequency and repetition frequency of the PD-ML laser can be locked by controlling the pump and cavity length. In the same f-2f heterodyne system and locking circuit, the phase locking of optical combs of PD-ML and FML with two repetition rates and the switching between them can be realized only by changing the pump. 
description: The phase locking mechanism and results of frequency comb based on double period mode locked (PD-ML) fiber laser are studied. Mode locked fiber lasers are designed to switch from basic period mode locking (FML) to PD-ML with similar output pulses by simply changing the pump. The experimental results show that the new comb generated in PD-ML has a strong correlation with the original teeth, and has a consistent carrier envelope offset (CEO) frequency. Therefore, the carrier envelope offset frequency and repetition frequency of the PD-ML laser can be locked by controlling the pump and cavity length. In the same f-2f heterodyne system and locking circuit, the phase locking of optical combs of PD-ML and FML with two repetition rates and the switching between them can be realized only by changing the pump.
DOI: 10.57760/sciencedb.03098
title: Progress in dual-comb spectroscopy
title: 双光梳光谱技术研究进展

description: Dual Comb Spectroscopy (DCS) based on optical frequency comb has the advantages of high resolution, high sensitivity, wide spectral coverage and fast measurement; In recent years, DCS has developed rapidly, and new principles, methods, technologies and applications are emerging. It is extremely necessary to systematically sort out its development status and objectively comment on its future development trend. In order to provide reference for relevant scientific and technical personnel when grasping the overall development of DCS, starting from the optical comb and taking the asynchronous optical sampling principle and noise characteristics as the main line, the measurement principle, implementation scheme, performance indicators, application technology, instrumentation, and possible future development trend of DCS are comprehensively reviewed and predicted. 
description: Dual Comb Spectroscopy (DCS) based on optical frequency comb has the advantages of high resolution, high sensitivity, wide spectral coverage and fast measurement; In recent years, DCS has developed rapidly, and new principles, methods, technologies and applications are emerging. It is extremely necessary to systematically sort out its development status and objectively comment on its future development trend. In order to provide reference for relevant scientific and technical personnel when grasping the overall development of DCS, starting from the optical comb and taking the asynchronous optical sampling principle and noise characteristics as the main line, the measurement principle, implementation scheme, performance indicators, application technology, instrumentation, and possible future development trend of DCS are comprehensively reviewed and predicted.
DOI: 10.57760/sciencedb.03100
title: Spectral Features Analysis of Multi-Wavelength Transmission Spectra of Pathogenic Bacterial Microbes in Water
title: 水体细菌微生物多波长透射光谱特征分析研究

description: The data set includes multi wavelength transmission spectrum data of Klebsiella pneumoniae, Salmonella typhimurium, Staphylococcus aureus and Escherichia coli at different concentrations, quantitative calibration curves between optical density values and bacterial concentrations of four bacteria at 400 nm, 450 nm, 500 nm and 550 nm, and quantitative calibration curves between optical density values and bacterial concentrations of four bacteria at 200 nm, 258 nm, 300 nm and 350 nm, And the transmission spectra, calculated scattering spectra and absorption spectra of four kinds of bacteria. In addition, the normalized scattering spectral data and normalized absorption spectral data of four bacteria are also included. 
description: The data set includes multi wavelength transmission spectrum data of Klebsiella pneumoniae, Salmonella typhimurium, Staphylococcus aureus and Escherichia coli at different concentrations, quantitative calibration curves between optical density values and bacterial concentrations of four bacteria at 400 nm, 450 nm, 500 nm and 550 nm, and quantitative calibration curves between optical density values and bacterial concentrations of four bacteria at 200 nm, 258 nm, 300 nm and 350 nm, And the transmission spectra, calculated scattering spectra and absorption spectra of four kinds of bacteria. In addition, the normalized scattering spectral data and normalized absorption spectral data of four bacteria are also included.
DOI: 10.57760/sciencedb.03101
title: Reducing the pulse repetition rate of picosecond dissipative soliton passively mode-locked fiber laser
title: 被动锁模皮秒耗散孤子光纤激光器重频的降低

description: In this paper, a method to reduce the repetition rate of all polarization maintaining (PM) line cavity picosecond dissipative soliton passively mode-locked fiber laser is proposed and demonstrated. The optical coupler (OC) is inserted into the cavity to extract the pulse energy, and the optical fiber with low nonlinear coefficient and large mode field is used at the back end of the OC to increase the cavity length, in which the propagating pulse energy is low. This makes the nonlinear phase shift within the allowable value of single pulse mode locking even if the cavity length increases significantly; This allows the laser repetition rate to be significantly reduced without significantly changing the pulse characteristics. Using the proposed method, for the 0.3 nm filter bandwidth, the laser repetition rate is successfully reduced to 1.77 MHz, and the finite pulse duration of near Fourier transform is 10 ps; It can be further reduced by optimizing the OC split ratio. The proposed method can be used to reduce the repetition rate of picosecond dissipative soliton passively mode-locked fiber lasers with arbitrary bandwidth filters. 
description: In this paper, a method to reduce the repetition rate of all polarization maintaining (PM) line cavity picosecond dissipative soliton passively mode-locked fiber laser is proposed and demonstrated. The optical coupler (OC) is inserted into the cavity to extract the pulse energy, and the optical fiber with low nonlinear coefficient and large mode field is used at the back end of the OC to increase the cavity length, in which the propagating pulse energy is low. This makes the nonlinear phase shift within the allowable value of single pulse mode locking even if the cavity length increases significantly; This allows the laser repetition rate to be significantly reduced without significantly changing the pulse characteristics. Using the proposed method, for the 0.3 nm filter bandwidth, the laser repetition rate is successfully reduced to 1.77 MHz, and the finite pulse duration of near Fourier transform is 10 ps; It can be further reduced by optimizing the OC split ratio. The proposed method can be used to reduce the repetition rate of picosecond dissipative soliton passively mode-locked fiber lasers with arbitrary bandwidth filters.
DOI: 10.57760/sciencedb.03102
title: A Broadband Infrared DFG Optical Comb Using All-PM Nonlinear Pulse Fiber Amplification Technique
title: 采用全 PM 非线性脉冲光纤放大技术的宽带红外DFG光学梳

description: A scheme of infrared comb based on fiber differential frequency generation (DFG) is proposed and demonstrated. The full polarization maintaining nonlinear pulse optical fiber amplification technology is adopted to generate nearly transform limited bicolor fundamental frequency pulses, so as to stably realize accurate time synchronization of broadband spectrum between fundamental frequency pulses. The 3dB bandwidth of DFG comb is 9 μ 2.05 near m μ m。 DFG combs can range from 7 to 10.5 μ The bandwidth of any tuning position is close to the theoretical limit. In addition, we show that it is necessary to suppress the number of chirps of fundamental pump pulses and reduce the number of fundamental signal pulses with limited transformation for achieving broadband and efficient DFG combs. 
description: A scheme of infrared comb based on fiber differential frequency generation (DFG) is proposed and demonstrated. The full polarization maintaining nonlinear pulse optical fiber amplification technology is adopted to generate nearly transform limited bicolor fundamental frequency pulses, so as to stably realize accurate time synchronization of broadband spectrum between fundamental frequency pulses. The 3dB bandwidth of DFG comb is 9 μ 2.05 near m μ m。 DFG combs can range from 7 to 10.5 μ The bandwidth of any tuning position is close to the theoretical limit. In addition, we show that it is necessary to suppress the number of chirps of fundamental pump pulses and reduce the number of fundamental signal pulses with limited transformation for achieving broadband and efficient DFG combs.