Er:YAG Crystal Temperature Influence on Laser Output Characteristics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00315741" target="_blank" >RIV/68407700:21340/17:00315741 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1117/12.2250518" target="_blank" >http://dx.doi.org/10.1117/12.2250518</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2250518" target="_blank" >10.1117/12.2250518</a>

Result language

angličtina

Original language name

Er:YAG Crystal Temperature Influence on Laser Output Characteristics

Original language description

The main goal of this work was to investigate the influence of the temperature of the Er: YAG active medium on laser properties in eye-safe spectral region for three various pump wavelengths. The tested Er: YAG sample doped by 0.5% of Er3+ ions had a cylindrical shape with 25mm in length and 5mm in diameter. The absorption spectrum of the Er: YAG active medium in the range from 1400nm up to 1700nm for temperatures 80K and 300K was measured. The crystal was placed inside the vacuum chamber of a liquid nitrogen cooled cryostat. The temperature was controlled within the 80-340K temperature range. Three pump sources generating at 1535, 1452, and 1467nm were applied. The first one was flash lamp pumped Er: glass laser (repetition rate 0.5 Hz, pulse duration 1 ms, pulse energy 148 mJ). The further two sources were fiber coupled laser diodes (repetition rate 10 Hz, pulse duration 10 ms, maximum pulse energies 106mJ and 195 mJ). The semi-hemispherical laser resonator consisted of a pump curved mirror and output plan coupler with a reflectivity of 90% @ 1645 nm. The laser output characteristics were investigated in dependence on temperature of active medium for three laser pumping systems. The output energy has an optimum in dependence on active medium temperature and pump wavelengths. The maximal generated laser energies were 16.2mJ (90 K), 28.7mJ (120 K), and 33.2mJ (220 K), for pump wavelengths 1452 nm, 1467 nm, and 1535 nm, respectively.

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/GA15-05360S" target="_blank" >GA15-05360S: Temperature influence on spectroscopic and lasing characteristics of solid-state materials covering spectral range from visible up to mid-infrared</a><br>

Continuities

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

Publication year

2017

Confidentiality

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

Article name in the collection

Proc. SPIE 10082 Solid State Lasers XXVI: Technology and Devices

ISBN

9781510606050

ISSN

0277-786X

e-ISSN

—

Number of pages

5

Pages from-to

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Publisher name

SPIE

Place of publication

Bellingham

Event location

San Francisco

Event date

Jan 28, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000402427300053