中国科技论文在线

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2005年05月27日

【期刊论文】Determination of thermal focal length and pumping radius in gain medium in laser-diode-pumped Nd: YVO4 lasers

宋峰， Feng Song， a) Chaobo Zhang， Xin Ding， Jingjun Xu， and Guangyin Zhang

Appl. Phys. Lett., Vol. 81, No.12, 16 September 2002，-0001，（）：

-1年11月30日

A method to determine the focal length of a thermal lens and pumping laser beam waist in the gain medium in laser-diode-pumped solid-state lasers is presented. This method, using resonator transform circle theory, is both simple and reliable. The measured focal length of the thermal lens is used to calculate the beam waist of pumping laser inside the gain medium. The effect of the thermal lens on the output power is also measured and analyzed.

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2005年05月27日

【期刊论文】Rate-equation theory and experimental research on dual-wavelength operation of a Ti: sapphire laser

宋峰， F. Song， *， J.Q. Yao， D.W. Zhou， J.Y.Qiao， G.Y. Zhang， J.G. Tian

，-0001，（）：

-1年11月30日

摘要

Rate-equation analysis and experiments on a pulsed dual-wavelength Ti:sapphire laser are reported in the paper. A four-energy-level system with two lower-energy levels is put forward and numerical calculations are given. A simple optical setup with two sub-resonators is constructed, which yields a total energy from dual-wavelength lasers up to 41.8mJ. The largest tunable range is over 110nm. Laser characteristics of dual-wavelength pulses are observed. Experimental results are in accord with rate-equation-theory results.

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2005年05月27日

【期刊论文】Temperature dependence of the wavelength and threshold of fiber-taper-coupled L-band Er3

宋峰， Xiang Peng， a) Feng Song， b) Makoto Kuwata-Gonokami， c) Shibin Jiang， d) and N. Peyghambarian

APPLIED PHYSICS LETTERS VOLUME 83, NUMBER 26 DECEMBER 2003，-0001，（）：

-1年11月30日

摘要

We report on the temperature dependence of L-band laser emission of fiber-taper-coupled Er31-doped tellurite glass microsphere. The microsphere laser emission threshold increased and the emitted laser wavelength shifted with temperature. The experimental results are explained with a quasi-four-level model, showing that a significant reduction of laser threshold can be achieved at lower temperatures and higher Q values of this microsphere laser.