Mid-infrared laser generation at 4.7-5.1 μm of the Cr,Fe:Zn1-xMgxSe (x ~ 0.4) single crystal under various excitation wavelengths

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00361795" target="_blank" >RIV/68407700:21340/22:00361795 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.2624405" target="_blank" >https://doi.org/10.1117/12.2624405</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2624405" target="_blank" >10.1117/12.2624405</a>

Result language

angličtina

Original language name

Mid-infrared laser generation at 4.7-5.1 μm of the Cr,Fe:Zn1-xMgxSe (x ~ 0.4) single crystal under various excitation wavelengths

Original language description

The cryogenically cooled Cr2+,Fe2+:Zn1-xMgxSe (x approximate to 0.4) single crystal with the thickness of similar to 3.6 mm was investigated under two different excitation wavelengths of the Q-switched Er:YAG laser (lambda approximate to 2.94 mu m, Eout approximate to 50 mJ) and by the gain-switched Fe:ZnSe laser (lambda approximate to 4.05 mu m, E-out approximate to 9 mJ). Because of relatively low Fe2+ ions concentration, the absorption coefficients at 78 K and 300 K ranged between 3 cm(-1) and 2 cm(-1) for both excitation wavelengths used. Absorption and fluorescence spectra, fluorescence lifetime as well as laser output characteristics were measured at low temperatures (78-180 K). The Cr,Fe:Zn1-xMgxSe (x approximate to 0.4) laser system was able to generate laser radiation at similar to 5 mu m at liquid nitrogen (LN2) temperature of 78 K under both similar to 2.94 mu m and similar to 4.05 mu m laser excitation. The laser oscillation wavelength was shifted up to similar to 5 mu m compared with a typical Fe:ZnSe output (similar to 4.0-4.1 mu m at LN2 temperature) due to the high amount of magnesium in the host material. Moreover, the oscillation wavelength was shifted even farther by increasing temperature of the active medium. The laser output energy was similar to 1.34 mJ and similar to 0.14 mJ for the similar to 2.94 mu m and similar to 4.05 mu m laser excitation, respectively. The beam profile structure was approximately fundamental for both excitation wavelengths used. The results present a novel mid-infrared 4.7-5.1 mu m coherent laser source based on cubic A(II)B(VI) matrix using direct excitation at wavelengths of similar to 2.94 mu m or similar to 4.05 mu m.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

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>S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

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

Article name in the collection

Proc. SPIE 11980, Solid State Lasers XXXI: Technology and Devices

ISBN

978-1-5106-4831-9

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

San Francisco, CA

Event date

Jan 22, 2022

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000842964800024