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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA15-05360S" target="_blank" >GA15-05360S: Vliv teploty na spektroskopické a laserové vlastnosti pevnolátkových aktivních materiálů pro viditelnou až střední infračervenou oblast</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

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

ISBN

978-1-5106-1507-6

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

6

Strana od-do

—

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

San Francisco

Datum konání akce

27. 1. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000432463600047