Wavelength dependence of two photon and free carrier absorptions in InP.
Wavelength dependence of two photon and free carrier absorptions in InP.
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InP 中两个光子和自由载流子吸收的波长依赖性。
DOI：
10.1364/oe.17.008741
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发表时间：
2009
期刊：
影响因子：
3.8
通讯作者：
S. Guha
中科院分区：
文献类型：
--
作者：
L. Gonzalez;J. Murray;S. Krishnamurthy;S. Guha
研究了未掺杂和Fe掺杂InP的双光子和自由载流子吸收过程在1.064和1.535微米波长的非线性吸收。利用皮秒和纳秒脉冲激光，首次通过非线性传输测量获得了双光子和自由载流子吸收系数的自洽集合。掺铁样品中载流子复合寿命的缩短导致了纳秒激光脉冲非线性吸收的降低。
Nonlinear absorption at 1.064 and 1.535 microm wavelengths by two photon and free carrier absorption processes in undoped and Fe doped InP has been investigated. Using picosecond and nanosecond duration lasers, a self-consistent set of the two photon and free carrier absorption coefficients are experimentally obtained through nonlinear transmission measurements for the first time. Reduced carrier recombination lifetime caused a decrease in nonlinear absorption of nanosecond duration laser pulses in Fe doped samples.