DATA SHEETBOC and TCBOC(Two Color) Balanced Optical Cross Correlator

APPLICATIONSPrecise synchronization of the repetition rates of two optical pulse trains, at same ordifferent wavelengths
Precise synchronization of the repetition rate of an ultrafast laser to the output of astabilized fiber link
Compensation of jitter, introduced by amplifiers in a laser amplifier chain or in similar
setupsMeasurement of jitter and drift between two synchronized lasers or two optical beampaths from the same source
Measurement of optical path length fluctuations (e.g. caused by temp. changes)

BENEFITS

More than 5 mV/fs sensitivity
Lower than 0.5 fs noise floorLess than 15 fs RMS timing jitter and timing drift

SAMPLE SYNCHRONIZATION SETUPSA TCBOC synchronizes the pulse trains of two ultrafast lasers at different wavelengths. Two options ofthe TCBOC is being offered: Measurement device (MD): standalone TCBOC
 Synchronization device (SD): standalone TCBOC equipped with feedback and control
electronics, including a pre-locker.

DESCRIPTION
The fully automated TCBOC precisely detects the relative time jitter between two independent opticalpulse trains, with different center wavelengths. It is a natural extension to Cycle’s well-known andpatented (one-color) BOC that is used for sub-femtosecond fiber link stabilization over kilometer
distances. Due to a balanced optical detection scheme, the TCBOC provides exceptionally high timing
sensitivity, attosecond timing resolution, amplitude invariance and robustness against environmental
fluctuations. The output of the TCBOC is a baseband voltage signal that is proportional to the relative
time delay between the two sources. This output can in turn be used in a phase-locked loop tosynchronize the two optical sources (e.g. locking a Ti:Sapphire laser to a low-noise fiber oscillator).
Standard wavelengths are 800nm, 1030nm or 1550nm.

SPECIFICATIONS

Dimensions (H x W x L)
WeightValue>5< 0.5< 15UnitmV / fs
fs
fs

300 x 270 x 66
5mmkg

<2000nmtailored for the wavelengths of interest

10 - 50
PM Fiber< 10mWdepending on wavelength range and other laser parameters
FC or SC connector (free space input optional)
tailored for the repetition rate of interest

Requirements
Optical input
wavelength
Optical input power
Optical input type
Pulse repetition rate

Commentat the detector output (not amplified)integrated detector noise floor within 10 kHz bandwidth
within 35 μHz - 1 MHz bandwidth, depending on noisecharacteristics of master/reference laser and performance ofslave laser intracavity actuators
depending on options

GHz

Control unit for SD version (Synchronization Device)
Dimensions
Integrated feedback
includedControl system interface
included
Auto lockincludedrack mountable, 19 inch width, 4 height units
optimized PID parameters
available in Epics, Tango…

when operated in an environment with maximum 0.5 K temperature and 3 % relative humidity deviation. Please note that thetiming jitter between the lasers must be lower than the target precision above the locking bandwidth.

1MEASUREMENT DATA
Out-of-loop timing jitter (left) and timing drift (right – 2 Hz sampling) of an 800-nm Ti:Sapphire laser
locked to an optical reference using a TCBOC (measured between the output of a Cycle PULSE link anda Coherent Vitara oscillator at 800-nm)

Contact sales@cyclelasers.com todiscuss your requirements andreceive a free white paper ontiming jitter measurements.

Cycle GmbH • Hamburg • Germany

www.cyclelasers.com

contact@cyclelasers.com

DATASHEET_TCBOC.PDF © Cycle GmbH - Specifications subject to change without notice, January 2022

Parameters
Detector sensitivity
Detector resolution
Timing Jitter1