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Proceedings Paper

Balanced homodyne detection technique for surface nonlinear optics
Author(s): Jun Chen; Susumu Machida; Yoshihisa Yamamoto
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Paper Abstract

In this paper, we present an ac optical balanced homodyne detection system which enables us to detect both the amplitude and phase of the surface optical nonlinear signal. In this system, a balancing scheme and an unique lock-in detection method using fundamental interference signal as a reference has been employed. This system enables us to simultaneously measure, with extremely high sensitivity of 3 aW and high precision, both the intensity and phase of a very weak surface SHG signal. Experimental results of simultaneous measurement of the intensity and phase in surface second-harmonic waves generated from native-oxidized Si (111) surfaces is presented.

Paper Details

Date Published: 20 September 2002
PDF: 7 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.465753
Show Author Affiliations
Jun Chen, Tokyo Institute of Polytechnics and CREST/Japan Science and Technology Corp. (Japan)
Susumu Machida, NTT Musashino R&D Ctr. (Japan)
Yoshihisa Yamamoto, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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