Title :
Application of photomixing of multimode LD light on THz spectroscopy
Author :
Morikawa, O. ; Fujita, M. ; Hangyo, M.
Author_Institution :
Dept. of Sci., Japan Coast Guard Acad., Hiroshima, Japan
Abstract :
A low-cost spectrometer can be constructed utilizing the intensity fluctuation in the CW multimode LD light. The frequency range of the light intensity fluctuation of the LD is limited by its spectral width. If a pair of light beams from two LDs with different center wavelengths is mixed, a higher frequency component appears. This method is applied to the low-cost spectrometer using the multimode LD.
Keywords :
fluctuations; infrared spectrometers; multiwave mixing; semiconductor lasers; submillimetre wave measurement; submillimetre wave spectroscopy; CW multimode LD light intensity fluctuation; LD spectral width; THz spectroscopy; center wavelengths; frequency component; frequency range; multimode LD light; photomixing; spectrometer cost; Bandwidth; Fluctuations; Frequency; Laser beams; Optical fiber couplers; Optical fiber polarization; Pulse measurements; Spectroscopy; Temperature; Ultrafast optics;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076178
