Solid state lasers with Raman frequency conversion

Černý, Petr; Jelı́nková, Helena; Zverev, Petr G.; Basiev, Tasoltan T.

doi:10.1016/j.pquantelec.2003.09.003

Cited by 290 publications

(91 citation statements)

References 17 publications

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“…An alternative approach -and the focus of considerable recent research -is the crystalline Raman laser [2][3][4]. This technique uses stimulated Raman scattering [5] wavelength of the input laser.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

Savitski

Friel

Hastie

et al. 2012

IEEE J. Quantum Electron.

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This version is available at https://strathprints.strath.ac.uk/37782/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output.JQE-132889-2011.R1

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Section: Introductionmentioning

confidence: 99%

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

Savitski

Friel

Hastie

et al. 2012

IEEE J. Quantum Electron.

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“…Crystalline Raman lasers enable wavelengths between 1.1 and 1.6 m to be reached using systems based on ubiquitous neodymium lasers [1,2]. Recently, the use of high optical quality, single-crystal, synthetic diamond as a Raman material in external cavity [3][4][5][6] and intracavity [7][8][9] configurations has been demonstrated -made possible by the progress in diamond chemical vapour deposition (CVD) [10,11].…”

Section: Introductionmentioning

confidence: 99%

16 W continuous-wave Raman laser using low-loss synthetic diamond

Lubeigt¹,

Savitski²,

Bonner³

et al. 2011

Opt. Express

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Low-birefringence ( n<2x10 6 ), low-loss (absorption coefficient <0.006cm1 at 1064nm), single-crystal, synthetic diamond has been exploited in a CW Raman laser. The diamond Raman laser was intracavity pumped within a Nd:YVO 4 laser. At the Raman laser wavelength of 1240nm, CW output powers of 1.6W and a slope efficiency with respect to the absorbed diode-laser pump power (at 808nm) of ~18% were measured. In quasi-CW operation, maximum on-time output powers of 2.8W (slope efficiency ~24%) were observed, resulting in an absorbed diode-laser pump power to the Raman laser output power conversion efficiency of 13%. References and links ©2011 Optical Society of America

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“…Raman wavelength converters, also known as frequency shifters, are reliable and low cost devices to red-shift the wavelength of laser beams delivered by either fixed wavelength or tunable lasers [1][2][3]. The input beam to be converted is simply focused inside the Raman medium.…”

Section: Raman Wavelength Convertersmentioning

confidence: 99%

Lowering backward Raman and Brillouin scattering in waveguide Raman wavelength converters

Huy

Delaye

Pauliat

et al. 2017

J. Eur. Opt. Soc.-Rapid Publ.

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Background: Liquid filled hollow core fiber Raman wavelength converters are devices enabling to red-shift the wavelength of laser beams delivered by either fixed wavelength or tunable lasers. Most of the reported converters operate in a pulsed regime with pulse durations comprised between a few hundreds of picoseconds and up to a few nanoseconds, and energy of a few micro-Joules. However, and depending on the pulse duration, the optimization of Raman converters turns to be rather challenging since the desired forward Raman scattering may compete with counter-propagating nonlinear effects like Raman and Brillouin back-scatterings. The Brillouin back-scattering is especially hard to cancel since the Brillouin gains are usually larger than the Raman gains. Techniques have already been investigated but are not fully satisfactory. Our aim in this paper is to propose a technique to optimize the Raman forward scattering and to minimize these back-scattering effects. Methods: We compare the interaction lengths in the forward and backward directions in the above-mentioned temporal regimes. If the fiber length is higher that the backward effective length of interaction then the backward effects should decrease at the benefit of the forward Raman scattering. Numerical simulations enable to estimate more precisely how long the fiber should be to get large Raman conversion efficiency and negligible Brillouin scattering. Results and discussion: To validate this technique we build two identical Raman converters differing only by the fiber lengths (0.5 m and 1.5 m). We present the experimental setup. The experimental results are confronted to the numerical simulations. As expected increasing the fiber length strongly decreases the Brillouin scattering. Conclusions: We have proposed a simple and efficient solution to minimize Brillouin back-scattering in Raman wavelength converters by optimizing the fiber length. The experimental demonstration was conducted with low energy (≈ 6 μJ) but the energies should scale with the fiber effective area if more energy is needed, without affecting the conversion efficiencies.

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Solid state lasers with Raman frequency conversion

Cited by 290 publications

References 17 publications

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

Characterization of Single-Crystal Synthetic Diamond for Multi-Watt Continuous-Wave Raman Lasers

16 W continuous-wave Raman laser using low-loss synthetic diamond

Lowering backward Raman and Brillouin scattering in waveguide Raman wavelength converters

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