Comparison of temperature dependence of Fe:ZnSe laser output properties under semi-longitudinal excitation by 2.94 and ~4.04 μm radiation

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00386320" target="_blank" >RIV/68407700:21340/25:00386320 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1007/s00340-025-08383-5" target="_blank" >https://doi.org/10.1007/s00340-025-08383-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00340-025-08383-5" target="_blank" >10.1007/s00340-025-08383-5</a>

Result language

angličtina

Original language name

Comparison of temperature dependence of Fe:ZnSe laser output properties under semi-longitudinal excitation by 2.94 and ~4.04 μm radiation

Original language description

The temperature dependence of the laser output properties of the Fe:ZnSe single crystal was compared under its excitation by 2.94 mu m Q-switched Er:YAG laser radiation and by similar to 4.04 mu m gain-switched second Fe:ZnSe laser radiation within the same semi-longitudinal configuration. A non-selective laser cavity consisted of a flat highly reflective mirror at similar to 4-5 mu m and a concave (r = 200 mm) output coupler with a reflectivity of 88% at similar to 3.9-5.3 mu m. To keep the energy at both excitation wavelengths the same of similar to 9.4 mJ, a special filters were used for attenuation of 2.94 mu m radiation. The output energy almost doubled since the angle between pumping and generated laser radiation was reduced from similar to 20 degrees to similar to 12 degrees. The generated laser oscillation wavelength was shifted by similar to 100 nm in the case of similar to 4.04 mu m compared to excitation by 2.94 mu m radiation. The maximum laser output energy of similar to 1.7 mJ under 2.94 mu m excitation was obtained at 78 K. However, at similar to 4.04 mu m pumping, the maximum of similar to 0.5 mJ was obtained at 260 K. The efficiency at 2.94 mu m excitation decreased from similar to 33% at 78 K to similar to 12% at 340 K. At similar to 4.04 mu m radiation excitation, the efficiency increased from the laser threshold at 120 K to its maximum of similar to 9% at 260 K.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>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

Name of the periodical

Applied Physics B: Lasers and Optics

ISSN

0946-2171

e-ISSN

1432-0649

Volume of the periodical

131

Issue of the periodical within the volume

3

Country of publishing house

DE - GERMANY

Number of pages

8

Pages from-to

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UT code for WoS article

001425887600001

EID of the result in the Scopus database

2-s2.0-85218419940