GdVO4 crystals with Nd3+, Tm3+, Ho3+, and Er3+ ions for diode-pumped microchip laser

Alexander I. Zagumennyi; Yury D. Zavartsev; Pavel A. Studenikin; Ivan Alexandrov Shcherbakov; Alexander F. Umyskov; Pavel A. Popov; Vsevolod B. Ufimtsev

doi:10.1117/12.236153

25 March 1996 GdVO₄ crystals with Nd³⁺, Tm³⁺, Ho³⁺, and Er³⁺ ions for diode-pumped microchip laser

Alexander I. Zagumennyi, Yury D. Zavartsev, Pavel A. Studenikin, Ivan Alexandrov Shcherbakov, Alexander F. Umyskov, Pavel A. Popov, Vsevolod B. Ufimtsev

Author Affiliations +

Proceedings Volume 2698, Solid State Lasers V; (1996) https://doi.org/10.1117/12.236153
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The Nd:GdVO₄, Ho:Tm:GdVO₄, Tm:GdVO₄, Er:GdVO₄, Yb:GdVO₄ crystals were grown by Czochralski technique. Distribution coefficients of Yb³⁺, Tm³⁺, Er³⁺, Nd³⁺ ions depend linearly on average radius of a dodecahedral ion. Refractive indices are measured with accuracy within 5 by 10^-5 in a range 400 - 1100 nm. Refractive indices depend on the size of the average dodecahedral radius. The thermal conductivity of the doped crystals in the 50 - 300 K temperature range is measured. The thermal conductivity in the <001> crystal direction at a temperature of 300 K is 12.3 W/m by K it is more than thermal conductivity of well-known Nd:YAG laser crystal. As a result of analysis it is shown that vanadate crystals have essential advantages for diode pump lasers in comparison with conventional YAG and YVO₄ hosts: large stimulated emission cross section at lasing wavelength; wide absorption band at pump wavelength; low dependency on a pump wavelength and a temperature control of a diode laser; low lasing threshold. For compact design lasers were made crystals with thickness from 2 mm up to 150 micrometers. Microchip laser (monolithic laser) consists of flat-flat cavities formed by a short length of crystal with dielectric cavity mirrors deposited directly on the surfaces.

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Alexander I. Zagumennyi, Yury D. Zavartsev, Pavel A. Studenikin, Ivan Alexandrov Shcherbakov, Alexander F. Umyskov, Pavel A. Popov, and Vsevolod B. Ufimtsev "GdVO₄ crystals with Nd³⁺, Tm³⁺, Ho³⁺, and Er³⁺ ions for diode-pumped microchip laser", Proc. SPIE 2698, Solid State Lasers V, (25 March 1996); https://doi.org/10.1117/12.236153

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