Free electron laser induced two-photon absorption in Hg1−xCdxTe
- 9 November 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (19) , 2320-2322
- https://doi.org/10.1063/1.108230
Abstract
The powerful output of FELIX, the recently built Rijnhuizen free‐electron laser, is used for the first frequency dependent study of nonlinear optical excitation of Hg1−xCdxTe in the far‐infrared spectral region. Two‐photon interband absorption has been investigated as a function of power and wavelength from 20 to 40 μm. This nonlinear optical absorption is used to perform autocorrelation experiments yielding the length of the micropulses of the free‐electron laser on a femtosecond time scale. The predicted dependence of the micropulse length on the synchronization between optical and electron pulses in the laser cavity is observed.Keywords
This publication has 8 references indexed in Scilit:
- First lasing with FELIXNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1992
- Nonlinear far-infrared spectroscopy of solidsInfrared Physics, 1991
- Optical Autocorrelation Function of a 3.2-μm Free-Electron LaserPhysical Review Letters, 1982
- Frequency dependence of two-photon absorption in InSb andPhysical Review B, 1980
- Intrinsic carrier concentration of Hg1−xCdxTeJournal of Applied Physics, 1979
- Two-photon absorption in InSb and Hg1-xCdxTeJournal of Physics C: Solid State Physics, 1979
- Two-Photon Excitation Rate in Indium AntimonidePhysical Review B, 1973
- Two-Photon Absorption Spectrum of CdSPhysical Review Letters, 1967