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Femtosecond measurements of the nonresonant nonlinear index in AlGaAs

 

作者: M. J. LaGasse,   K. K. Anderson,   C. A. Wang,   H. A. Haus,   J. G. Fujimoto,  

 

期刊: Applied Physics Letters  （AIP Available online 1990）
卷期: Volume 56, issue 5  

页码: 417-419

 

ISSN:0003-6951

 

年代: 1990

 

DOI:10.1063/1.102798

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Time‐division interferometry with 430 fs tunable laser pulses is used for direct femtosecond measurements of the wavelength dependence of the nonresonant nonlinear index of refraction,n2, in AlGaAs waveguides at room temperature. Below band‐gapn2values of ∼10−12cm2/W are observed with resonant enhancement as the laser wavelength is tuned toward the band edge.

 

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