Competition between forward and backward stimulated Raman scattering in gases

Akulinichev, Valerii V.; Горбунов, В.А.; Pivinskii, E. G.

doi:10.1070/qe1997v027n05abeh000965

Cited by 6 publications

(1 citation statement)

References 14 publications

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“…The counter-propagating Stokes pulse can not only extract energy throughout the pump pulse but also experiences strong temporal compression. 320–322 This has been observed in several liquids, 320,321,323–325 methane, 326–328 and D 2 329 in free-space geometries. Investigations of backward SRS have also been conducted in solid-core silica fiber 330–333 and H 2 -filled HCF.…”

Section: Perspectivesmentioning

confidence: 61%

Unified and vector theory of Raman scattering in gas-filled hollow-core fiber across temporal regimes

Chen,

Wise

2024

APL Photonics

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Raman scattering has found renewed interest owing to the development of gas-filled hollow-core fibers, which constitute a unique platform for exploration of novel ultrafast nonlinear phenomena beyond conventional solid-core-fiber and free-space systems. Much progress has been made through models for particular interaction regimes, which are delineated by the relation of the excitation pulse duration to the time scales of the Raman response. However, current experimental settings are not limited to one regime, prompting the need for tools spanning multiple regimes. Here, we present a theoretical framework that accomplishes this goal. The theory allows us to review recent progress with a fresh perspective, makes new connections between distinct temporal regimes of Raman scattering, and reveals new degrees of freedom for controlling Raman physics. Specific topics that are addressed include transient Raman gain, the interplay of electronic and Raman nonlinearities in short-pulse propagation, and interactions of short pulses mediated by phonon waves. The theoretical model also accommodates vector effects, which have been largely neglected in prior works on Raman scattering in gases. The polarization dependence of transient Raman gain and vector effects on pulse interactions via phonon waves is investigated with the model. Throughout this Perspective, theoretical results are compared to the results of realistic numerical simulations. The numerical code that implements the new theory is freely available. We hope that the unified theoretical framework and numerical tool described here will accelerate the exploration of new Raman-scattering phenomena and enable new applications.

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Section: Perspectivesmentioning

confidence: 61%

Unified and vector theory of Raman scattering in gas-filled hollow-core fiber across temporal regimes

Chen,

Wise

2024

APL Photonics

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The investigation of stimulated Raman scattering in gases under di-harmonic pumping

Zheng

Shen

et al. 2022

Optics Communications

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Nd:YAG Laser with Stimulated Brillouin and Raman Scattering Pulse Compression

Горбунов¹,

Serebryakov²,

Startsev³

et al.

CLEO/Europe Conference on Lasers and Electro-Optics

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CWF4 Flashlamp-pumpedNdKGW Laser a t 1.06 lad 135 lua in free-running and Q-swltcW mode. Results In MOPA anfiguration. 0. MLJSSET and J.P. BOQUULON Labomtoire de Physique de lVniversit6 de Bourgognc UPRES-A CNRS no 5027Ncodimium-dopcd Potassium-Gadolrnium Tungstate crystal KGd(W04)2 o r NdKGW IS a c r y d uhore S O I I C~ allows high Nd doping (3 to 8%) wthoul dcmmcntal concenvaunn qucnchmg. In h s ua) it can compctc with NdYAG in tcrms of opucal gun. dcsprte a poorer lhmnal condurnviry. We prcscnt h a c thc rcsulta obwncd at repcution ratcs up to 60 Hr Wc vstcd wvcral Nd:KGW rcds horn two diffucnt furnishus. mth the s m c dimcnuons ( 6.35 x 76 mm) and ditlerrnt Nd dopant lcvcls (from 2.8 to 8 at.%). Thc end faces ucre rithcr fladflat, parallel and ARcoated a1 1 .06 flm for thc 1.06 p emission or uhcd (1') ard AR-coated for 1 06 and I .35 wn for thc 1.35 km CMsuOn

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Competition between forward and backward stimulated Raman scattering in gases

Cited by 6 publications

References 14 publications

Unified and vector theory of Raman scattering in gas-filled hollow-core fiber across temporal regimes

Unified and vector theory of Raman scattering in gas-filled hollow-core fiber across temporal regimes

The investigation of stimulated Raman scattering in gases under di-harmonic pumping

Nd:YAG Laser with Stimulated Brillouin and Raman Scattering Pulse Compression

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