Anisotropy of Spectroscopic and Laser Properties of Ho:YAP Crystal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F22%3A00361804" target="_blank" >RIV/68407700:21340/22:00361804 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1117/12.2608055" target="_blank" >https://doi.org/10.1117/12.2608055</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2608055" target="_blank" >10.1117/12.2608055</a>

Result language

angličtina

Original language name

Anisotropy of Spectroscopic and Laser Properties of Ho:YAP Crystal

Original language description

Ho-doped yttrium aluminum perovskite Ho:YAP (Ho:YAlO3) is a promising material for the construction of high-power lasers, operating in 2.1 (mu)m spectral region. We present the dependencies of key spectroscopic properties on Ho-doping concentration and on Ho:YAP crystal orientation. Three Ho:YAP crystals with various Ho-doping concentrations were grown by Czochralski method: 0.26 at.% Ho/Y, 0.45 at.% Ho/Y, 1.05 at.% Ho/Y. The uncoated samples were prepared in the form of polished wafers 2.8mm thick with diameter up to 45mm and in the form of an oriented cuboid (6 pound 7 pound 8 mm). The detailed polarization resolved absorption spectra were measured with a high resolution in the range from 300 up to 7500 nm. The polarization resolved emission spectra were investigated in the range from 500 up to 3500 nm. The I-5(7) upper-laser-level lifetime was measured using a confocal method. From the obtained data, the absorption cross-sections in all investigated spectral ranges were determined and the Judd-Ofelt analysis was performed. It was found that the Ho-doping concentration significantly influenced mainly the upper I-5(7) laser level lifetime, which drops from 5.8 ms for the lowest doping to 4.7 ms for the highest tested Ho-doping. Using the oriented Ho:YAP cuboid (1.05 at.% Ho/Y), laser emission reaching the quantum limit under Tm-fibre excitation (1939 nm) was reached. By an appropriate choice of the Ho:YAP crystal orientation and reflectance of the laser output coupler, it was possible to achieve laser action at wavelengths of 2083, 2102, 2118, and 2130 nm, or to generate laser radiation at several wavelengths simultaneously.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20201 - Electrical and electronic engineering

Project

<a href="/en/project/FW01010219" target="_blank" >FW01010219: Multicomponent single crystal materials for solid state lasers</a><br>

Continuities

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

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

11

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

000842964800012