Cryogenic-cooled Tm:SBN tunable laser

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F17%3A00316316" target="_blank" >RIV/68407700:21340/17:00316316 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1117/12.2292425" target="_blank" >http://dx.doi.org/10.1117/12.2292425</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2292425" target="_blank" >10.1117/12.2292425</a>

Result language

angličtina

Original language name

Cryogenic-cooled Tm:SBN tunable laser

Original language description

In this work the temperature dependence of spectroscopic and laser properties of new active medium Tm:SBN (Strontium-Barium Niobate, SrxBa1-xNb2O6, x = 0.61) is presented. The tested sample Tm:SBN (2 wt. % of Tm2O3) is appropriate for generation of laser radiation at 1.88 μm. The Tm:SBN sample (thickness 6.65 mm) had plan-parallel polished faces without anti-reflection. During spectroscopy and laser experiments the Tm:SBN was attached to temperature-controlled copper holder and was placed in a vacuum chamber. The transmission and emission spectra of Tm:SBN and the fluorescence decay time were measured depending on temperature (80 - 350 K). The fluorescence decay time was measured to be 3.5 ms and 2.8 ms at 80 and 350 K, respectively. Longitudinal excitation of Tm:SBN was carried out by a fibre-coupled laser diode (pulse duration 10 ms, repetition rate 10 Hz, pump wavelength 793 nm). The laser resonator was hemispherical, 146 mm long, with flat pumping mirror (HR @1.8 - 2.1 μm) and spherical output coupler (r = 150 mm, R = 97.5 % @1.8 - 2.1 μm). The Tm:SBN laser properties were investigated at temperature range 80 - 300 K. The highest slope efficiency with respect to absorbed pumped power was 3 % at 80 K. The maximum output peak amplitude power was 0.12 W at 80 K, i.e. 3.2 times higher than it was measured at 200 K. Tunability of laser wavelength at 80 K in the range of 1827 - 1962 nm was obtained by using SiO2 birefringent filter. At 300 K, wavelength tunability reached 1859 - 1970 nm. Thus, the new Tm:SBN crystal can be a promising laser material in the region of 2 μm.

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

Photonics, Devices, and Systems VII

ISBN

978-1-5106-1702-5

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

Prague

Event date

Aug 28, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000425429900004