High-efficiency and economical solar-energy-pumped laser with Fresnel lens and chromium codoped laser medium

被引：176

作者：

Yabe, T. ^{[1
]}

Ohkubo, T. ^{[1
]}

Uchida, S. ^{[1
]}

Yoshida, K. ^{[1
]}

Nakatsuka, M. ^{[1
]}

Funatsu, T. ^{[1
]}

Mabuti, A. ^{[1
]}

Oyama, A. ^{[1
]}

Nakagawa, K. ^{[1
]}

Oishi, T. ^{[1
]}

Daito, K. ^{[1
]}

Behgol, B. ^{[1
]}

Nakayama, Y. ^{[1
]}

Yoshida, M. ^{[1
]}

Motokoshi, S. ^{[1
]}

Sato, Y. ^{[1
]}

Baasandash, C. ^{[1
]}

机构：

[1] Tokyo Inst Technol, Meguro Ku, Tokyo 1528552, Japan

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 26期

关键词：

D O I：

10.1063/1.2753119

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors achieved 11%-14% slope efficiency of solar-pumped laser by Cr-codoped Nd:yttrium aluminum garnet ceramic and Fresnel lens focusing from natural sunlight. The laser output of 24.4 W was achieved with 1.3 m(2) Fresnel lens. The maximum output for unit area of sunlight was 18.7 W/m(2), which is 2.8 times larger than previous results with mirror collector. The utilization of Cr3+ ion enabled efficient absorption and energy transfer to Nd3+ ion of solar spectrum. The fluorescence yield at 1064 nm for various pumping wavelengths was measured both for Crcodoped and nondoped laser media, and 1.8 times enhancement of laser output from sunlight is predicted. (c) 2007 American Institute of Physics.

引用

页数：3

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