Search query: Continuous-wave diamond   laser

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abstract: The longest wavelength ~1.4 um) emitted by a diamond Raman laser pumped by a semiconductor disk laser (SDL) is reported. The output power of the intracavity pumped Raman laser reached a maximum of 2.3 W with an optical conversion efficiency of 3.4% with respect to the absorbed diode pump power. Narrow Stokes emission (FWHM <0.1 nm) was attained using etalons to limit the fundamental spectrum to a single etalon peak. Tuning of the Raman laser over >40 nm was achieved via rotation of an intracavity birefringent filter that tuned the SDL oscillation wavelength.
author_names: Riccardo Casula

Jussi-Pekka Penttinen

Alan J Kemp

Mircea D Guina

Jennifer E Hastie
title: 1.4 um continuous wave diamond Raman laser.
venue: Optics express
year: 2017

abstract: Continuous wave operation of a diamond Raman laser is demonstrated. Low birefringence synthetic single crystal diamond is used and is intracavity pumped by a Nd:YVO(4) laser. A cw output power of 200 mW is achieved at the Raman wavelength (1240 nm) and 1.6 W of on time output power is obtained in quasi cw mode. Losses in the diamond (approximately 1% per pass) and thermal effects in the Nd:YVO(4) limit the efficiency.
author_names: Walter Lubeigt

Gerald Michael Bonner

Jennifer E Hastie

Martin D Dawson

David Burns

Alan J Kemp
title: Continuous wave diamond Raman laser.
venue: Optics letters
year: 2010

abstract: Continuous wave operation of a diamond Raman laser, intracavity pumped by a diode pumped InGaAs semiconductor disk laser (SDL) is reported. The Raman laser, which utilized a 6.5 mm long synthetic single crystal diamond, reached threshold for 5.3 W of diode laser pump power absorbed by the SDL. Output power up to 1.3 W at the first Stokes wavelength of 1227 nm was demonstrated with excellent beam quality and optical conversion efficiency of 14.4% with respect to absorbed diode laser pump power. Broad tuning of the Raman laser output between 1217 and 1244 nm was achieved via intracavity tuning of the SDL oscillation wavelength.
author_names: Daniele C Parrotta

Alan J Kemp

Martin D Dawson

Jennifer E Hastie
title: Tunable continuous wave diamond Raman laser.
venue: Optics express
year: 2011

abstract: Recent developments in diamond synthesis have enabled the growth of high optical quality material. This opens the way for intracavity applications in lasers [1] and in particular the exploitation of diamond's exceptional thermal conductivity. This is best done by placing the diamond as close as possible to the heat source, and ideally using it as the gain material in its own right. In this report, we present the first multi watt >5 W) continuous wave (cw) laser based on diamond. This diamond Raman laser exploits diamond's high Raman gain. Raman lasers are usually pumped by high peak power pulsed lasers [2] and indeed Feve et al. recently demonstrated a 25W pulsed diamond Raman laser [3] By contrast, we fully exploit the high optical quality of state of the art synthetic diamond to enable multi watt CW operation.
author_names: Vasili G Savitski

Jennifer E Hastie

Martin D Dawson

David Burns

Alan J Kemp
title: Multi watt continuous wave diamond Raman laser at 1217 nm
venue: 2011 Conference on Lasers and Electro Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC)
year: 2011

author_names: Sergei Antipov

Richard P Mildren

Alexander Sabella

Robert J Williams

David J Spence

Ondrej Kitzler
title: Dynamics in a 1.2 kW quasi continuous wave diamond Raman laser with low coherence pumping (Conference Presentation)
venue: Solid State Lasers XXVIII: Technology and Devices
year: 2019

abstract: We present a ~1400nm emitting diamond Raman laser intracavity pumped by an ~1180nm semiconductor disk laser. We measured a maximum output power of 2.3 W at ~1400nm with an output coupling of 3.5% The Raman laser was tunable from 1373 to 1415nm using a 4 mm thick birefringent filter.
author_names: Riccardo Casula

Daniele C Parrotta

Alan J Kemp

Jussi-Pekka Penttinen

Tomi Leinonen

M Guina

Jennifer E Hastie
title: ~1400 nm continuous wave diamond Raman laser intracavity pumped by an InGaAs semiconductor disk laser
year: 2016

abstract: Low birefringence, single crystal, synthetic diamond is used as a Raman medium in a Nd:YVO4 laser. CW output powers of 1.6W at the Raman wavelength were recorded. In quasi CW operation, on time output powers of 2.8W were obtained.
author_names: Walter Lubeigt

Vasili G Savitski

Gerald Michael Bonner

Jennifer E Hastie

Martin D Dawson

David Burns

Alan J Kemp
title: 1.6W continuous wave diamond Raman laser
year: 2011

abstract: We explore a ring cavity continuous wave diamond Raman laser with a tunable second Stokes output. We will characterize the laser operation at first and second Stokes and discuss the conditions of single longitudinal mode operation.
author_names: Muye Li

Ondrej Kitzler

David J Spence
title: Continuous Wave Resonantly Pumped Second Stokes Diamond Raman Laser
venue: 2020 Conference on Lasers and Electro Optics Pacific Rim (CLEO PR)
year: 2020

abstract: We report a diamond Raman ring cavity laser resonantly pumped by a tunable Ti:sapphire continuous wave laser. We characterize the laser operation generating first Stokes output and, for the first time, generate second Stokes lasing at a maximum output power of 364 mW with 33.4% slope efficiency at 1101.3 nm. Single longitudinal mode operation is achieved for all first Stokes output powers, but only for lower output powers for second Stokes operation. We discuss possible reasons preventing single longitudinal mode operation.
author_names: Muye Li

Ondrej Kitzler

David J Spence
title: Investigating single longitudinal mode operation of a continuous wave second Stokes diamond Raman ring laser.
venue: Optics express
year: 2020

abstract: We report a high brightness cascaded Stokes diamond Raman laser with a diffraction limited beam quality pumped by an Yd doped fiber laser. The Raman laser operated at 1477 nm and reached an output power of 63 W with 214 W pump power in continuous wave mode. Conversion efficiency over 30% was achieved using a single pump pass concentric cavity that was highly resonant at the first Stokes and had high outcoupling at the second Stokes (45% Thermal limitations were investigated as well as the temporal behavior of the first and second Stokes intra cavity power.
author_names: Matthias Heinzig

Gonzalo Palma-Vega

Benjamin Yildiz

Till Walbaum

Thomas Schreiber

Andreas Tunnermann
title: Continuous wave cascaded second Stokes diamond Raman laser at 1477 nm.
venue: Optics letters
year: 2021