Basic properties of a new Nd-doped laser crystal: Nd:GdNbO<sub>4</sub>

doi:10.1007/s12200-017-0715-7

Front. Optoelectron.

2017, Vol. 10

Issue (2) : 111-116 https://doi.org/10.1007/s12200-017-0715-7

RESEARCH ARTICLE

Basic properties of a new Nd-doped laser crystal: Nd:GdNbO₄

Shoujun DING^1,², Qingli ZHANG¹(

), Wenpeng LIU¹, Jianqiao LUO¹, Dunlu SUN¹

¹. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
². University of Science and Technology of China, Hefei 230026, China

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Abstract

A Nd-doped GdNbO₄ single crystals have been grown successfully using the Czochralski technique. The chemical etching method was employed to study the defects in the structural morphology of Nd:GdNbO₄ crystal with phosphoric acid etchant. Mechanical properties (such as hardness, yield strength, fracture toughness, and brittle index) of the as-grown crystal were systematically estimated on the basis of the Vickers hardness test for the first time. The transmission spectrum of Nd:GdNbO₄ was measured in the wavelength range of 320–2400 nm at room temperature, and the absorption peaks were assigned. Results hold great significance for further research on Nd:GdNbO₄.

Keywords Nd:GdNbO₄ laser crystal mechanical properties chemical etching

Corresponding Author(s): Qingli ZHANG

Just Accepted Date: 27 May 2017 Online First Date: 22 June 2017 Issue Date: 05 July 2017

Cite this article:

Shoujun DING,Qingli ZHANG,Wenpeng LIU, et al. Basic properties of a new Nd-doped laser crystal: Nd:GdNbO₄[J]. Front. Optoelectron., 2017, 10(2): 111-116.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-017-0715-7
https://academic.hep.com.cn/foe/EN/Y2017/V10/I2/111

Fig.1 As-grown Nd:GdNbO₄ crystal boule

Fig.2 Dislocation etch pit patterns of the Nd:GdNbO₄ crystal on three different crystallographic faces. (a) (100); (b) (010); and (c) (001)

Fig.3 Atomic arrangement diagrams viewed along the three different crystalline orientations for the Nd:GdNbO₄ crystal. (a) (100); (b) (010); and (c) (001)

Fig.4 Vickers indentation mark on the Nd:GdNbO₄ crystal along three different crystallographic faces. (a) (100); (b) (010); and (c) (001)

Fig.5 Dependence of Vickers hardness H_v on the indentation load P on (100), (010), and (001) crystallographic faces of Nd:GYNO crystal

Fig.6 Variation of logP with logd on (100), (010), and (001) crystallographic faces of Nd:GYNO crystal

Tab.1 Mechanical parameters of Nd:GdNbO₄ crystal

Fig.7 Transmission spectra of Nd:GdNbO₄ at room temperature

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