摘要
The principle of step-scan Fourier transform infrared （FTIR） spectroscopy is introduced. Double modulation step-scan FTIR technique is used to obtain the quantum cascade laser＇s stacked emission spectra in the time domain. Optical property and thermal accumulation of devices due to large drive current are analyzed.
The principle of step-scan Fourier transform infrared （FTIR） spectroscopy is introduced. Double modulation step-scan FTIR technique is used to obtain the quantum cascade laser＇s stacked emission spectra in the time domain. Optical property and thermal accumulation of devices due to large drive current are analyzed.
基金
This work was supported by the Special Funds for Ma-jor State Basics Research Project (No. G20000683-2),General Program and Key Program of National Natu-ral Science Foundation (No. 90101002, 60136010), andNational Advanced Materials Committee of China (No.2001AA311140, 2005AA31G040).
