24 September 1996 Laser diode in a coherent resolved interferometer
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Proceedings Volume 2886, Semiconductor Lasers II; (1996) https://doi.org/10.1117/12.251911
Event: Photonics China '96, 1996, Beijing, China
A short coherence length of a laser diode (LD) is required in coherent resolved interferometers. The coherence length of a LD can be reduced by modulating the source with a high frequency signal, which is superposed on the driving current for the LD. A 980nm laser diode in this paper is modulated with a frequency 40MHz and modulation depth 0.5, where its coherence length is compressed 20 times. The first side-band peak in the coherence function is reduced by 10dB, but it is hard to suppress them completely.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Dongsong Sun, Dongsong Sun, Shigang Liu, Shigang Liu, Yuan Zhao, Yuan Zhao, Lijie Qiao, Lijie Qiao, } "Laser diode in a coherent resolved interferometer", Proc. SPIE 2886, Semiconductor Lasers II, (24 September 1996); doi: 10.1117/12.251911; https://doi.org/10.1117/12.251911

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