Effect of wavelength-modulating parameters on intensity fluctuations of the light source in a photothermal-modulating laser-diode interferometer

Authors
Wang, XZ Lu, HB Wang, XF Yu, DY Qian, F Fang, ZJ
Citation
Xz. Wang et al., Effect of wavelength-modulating parameters on intensity fluctuations of the light source in a photothermal-modulating laser-diode interferometer, J OPT A-P A, 3(3), 2001, pp. 222-224
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
ISSN journal
14644258 → ACNP
Volume
3
Issue
3
Year of publication
2001
Pages
222 - 224
Database
ISI
SICI code
1464-4258(200105)3:3<222:EOWPOI>2.0.ZU;2-X
Abstract
In the laser diode interferometer with a photothermal wavelength modulation which is used for optical fine measurement, intensity fluctuations of the light source cause measurement errors though the fluctuations decrease grea tly as compared with the injection current modulation of wavelength. In thi s paper, we investigated the effect of photothermal-modulation parameters o f wavelength on the intensity fluctuations of the light source. Choosing ap propriate photothermal-modulation parameters, we measured microdisplacement s of objects with a high measurement accuracy.