Numerical model of a cross-cascade picosecond synchronously pumped Raman laser

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00384320" target="_blank" >RIV/68407700:21340/25:00384320 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.3056305" target="_blank" >https://doi.org/10.1117/12.3056305</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.3056305" target="_blank" >10.1117/12.3056305</a>

Result language

angličtina

Original language name

Numerical model of a cross-cascade picosecond synchronously pumped Raman laser

Original language description

Picosecond synchronously pumped lasers based on stimulated Raman scattering (SRS) are attractive sources of watt-level optical radiation in the visible and infrared spectral region at high repetition rates. This type of Raman laser having a low pulse energy threshold compared to a Raman generator/convertor is robust, versatile, and very effective. Another advantage is interesting possibility of generation at new wavelengths using cascade principle of SRS at single or multiple Raman lines. Cross-cascade process, where the Stokes wave is a source of nonlinearity for additional SRS radiation scattered at another vibrational mode, can be easily achieved in the case of synchronously pumped Raman laser. In many papers of our research group, we have achieved significant pulse shortening at wavelengths corresponding to cross-cascade SRS process in various crystalline Raman media. The output pulse duration was controlled by cavity length detuning. Due to group velocity mismatch of the individual waves and ability to control their delay by cavity length detuning, the SRS pulses are preferentially amplified at the leading edge leading to pulse shortening. This phenomenon is known for synchronously pumped Raman lasers generating at single vibrational line. However, a numerical model for the cross-cascade SRS process confirming the experimental results was not available. To the best of our knowledge, we present a numerical model of a cross-cascade crystalline Raman laser synchronously pumped by a continuously mode-locked picosecond laser for the first time. The pulse shortening mechanism as well as the whole dynamics of Stokes waves generation will be discussed in detail.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proc. SPIE 13524, Nonlinear Optics and Applications XIV

ISBN

978-1-5106-8844-5

ISSN

0277-786X

e-ISSN

1996-756X

Number of pages

6

Pages from-to

—

Publisher name

SPIE

Place of publication

Bellingham (stát Washington)

Event location

Praha

Event date

Apr 7, 2025

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

001533767100008