Temperature influence on spectroscopic properties and 2.7 mu m lasing of Er:YAP crystal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F18%3A00324036" target="_blank" >RIV/68407700:21340/18:00324036 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1117/12.2287138" target="_blank" >http://dx.doi.org/10.1117/12.2287138</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2287138" target="_blank" >10.1117/12.2287138</a>

Result language

angličtina

Original language name

Temperature influence on spectroscopic properties and 2.7 mu m lasing of Er:YAP crystal

Original language description

The spectroscopic and laser properties of Er:YAP crystal, that is appropriate for generation at 2.7 mu m, in temperature range 78 - 400 K are presented. The sample of Er:YAP (1 at. % of Er3+) had face-polished plan parallel faces without anti-reflection coatings (thickness 4.47 mm). During experiments the Er:YAP was attached to temperature controlled copper holder and it was placed in vacuum chamber. The transmission and emission spectra together with the fluorescence decay time were measured depending on temperature. The Er:YAP crystal was longitudinally pumped by radiation from laser diode that works in pulse regime (repetition rate 66.6 Hz, pulse duration 1.5 ms, pump wavelength 972.5 nm) or in CW regime. Laser resonator was hemispherical, 145 mm in length with flat pumping mirror (HR @ 2.7 mu m) and spherical output coupler (r = 150 mm, R = 95 % A 2.5- 2.8 mu m). The fluorescence decay time of manifold I-4(11/2) (upper laser level) became shorter and intensity of up-conversion radiation was increasing with decreasing temperature. In pulsed regime, the highest slope efficiency with respect to absorbed mean power was 1.27 % at 78 K. The maximum output of mean power was 3.5 mW at 78 K, i.e. 8.7 times higher than measured this value at 300 K. The maximal output power 27 mW with slope efficiency up to 3.5 % was achieved in CW. The radiation generated by Er:YAP laser (2.73 mu m) is close to absorption peak of water (3 mu m) thus this wavelength can be use in medicine and spectroscopy.

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

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Article name in the collection

Proc. SPIE 10511 Solid State Lasers XXVII: Technology and Devices

ISBN

978-1-5106-1507-6

ISSN

0277-786X

e-ISSN

—

Number of pages

6

Pages from-to

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Publisher name

SPIE

Place of publication

Bellingham

Event location

San Francisco

Event date

Jan 27, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000432463600047