Characteristics of Nd3+-doped Y3ScAl4O12 ceramic laser

被引：40
作者：
Sato, Yoichi
Saikawa, Jiro
Taira, Takunori [1 ]
Ikesue, Akio
机构：
[1] Inst Mol Sci, Laser Res Ctr, Okazaki, Aichi 4448585, Japan
[2] PolyTechno Co Ltd, Res & Dev Lab, Atsuta Ku, Nagoya, Aichi 4568587, Japan
来源：
OPTICAL MATERIALS | 2007年 / 29卷 / 10期
关键词：
D O I：
10.1016/j.optmat.2006.01.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Highly transparent Nd3+-doped Y3ScAl4O12 (YSAG) ceramics with up to 5.0 at.% Nd3+-concentration (CNd) were synthesized from commercial oxide powders with purity of > 99.99% by a solid-state reaction method. Absorption, fluorescence, and decay properties of these materials were evaluated. Considering the influence of increasing CNd on these spectroscopic characteristics, it became clear that Nd:YSAG ceramics is suitable for the microchip laser or the mode-locked laser. We demonstrated microchip laser operation using highly concentrated Nd:YSAG. One-micron laser output power of 165 mW (37.0% optical-to-optical overall efficiency) and 49.5% slope efficiency were obtained under direct pumping into the emitting levels by a Ti:Sapphire laser from uncoated ceramic gain medium. Short-pulse generation from a passively mode-locked Nd3+-doped YSAG ceramic laser was also demonstrated, and this laser generated pulses of similar to 10 ps with 560 mW average power (35% optical-to-optical efficiency) under ew mode-locking operation. (c) 2006 Elsevier B.V. All rights reserved.
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页码：1277 / 1282
页数：6
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