Fabrication and characterization of highly-concentrated Nd-doped YAG laser ceramics

Roman P. Yavetskiy 1Denis Y. Kosyanov 1Alexander V. Tolmachev 1Yurii Kopylov 2Valery Kravchenko 2Sergey V. Frolov 3Viktor B. Taranenko 3Vladimir L. Vozniy 4

1. Institute for Single Crystals NAS of Ukraine (ISC), 60 Lenin Ave., Kharkov 61001, Ukraine
2. Fryazino Institute of radioengineering and electronics Russian Academy of Sciences (FIRE RAS), Vvedenskogo sq., Fryazino 141190, Russian Federation
3. IC Institute of Applied Optics, Kiev 04053, Ukraine
4. EDAPS-Laser, Kyiv 02088, Ukraine

Abstract

Optical ceramics are promising materials for utilization as phosphors, transparent armor, lamp envelopes, scintillation detectors, etc. Laser ceramics possess several advantages over traditional materials among which there are improved processability, lower cost of fabrication, wider range of compositions, higher doping concentration, and larger size of samples. Nd:Y3Al5O12 (Nd:YAG) optical ceramics doped by trivalent rare earth ions is considered as promising material for high-power and ultrafast solid state laser, microchip lasers, etc. In this paper we present results of fabrication of highly-concentrated Nd:YAG transparent ceramic and characterization of its optical and laser properties.

Highly-concentrated Nd:YAG (1-4 at. %) optical ceramics has been produced by solid-state reactive sintering of fine oxide powders at the temperatures of 1600-1800 °С and vacuum of 10-3-10-5 Pa. Submicron Y2O3, Al2O3 and Nd2O3 powders were used as starting materials. The structural and phase state of laser ceramics depending fabrication conditions has been studied. The sintering trajectory of submicron powders will be presented. Influence of neodymium ions concentration on density, average grain size and lattice parameter will be discussed. The optical and luminescence properties, laser characteristics of sintered ceramics depending on neodymium ions concentration will be presented. The quasi-continuous laser operation of highly-concentrated Nd:YAG (1-4 at. %) ceramics will be presented. We will discuss the ways to improve the optical quality and lasing efficiency of the Nd:YAG ceramics samples.

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Presentation: Poster at 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17, Topical Session 6, by Roman P. Yavetskiy
See On-line Journal of 17th International Conference on Crystal Growth and Epitaxy - ICCGE-17

Submitted: 2013-03-27 13:27
Revised:   2013-03-27 13:27
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