Precise photodetection with shot-noise-limit sensitivity for picosecond laser measurements: detection of small surface gradients with photodeflection technique

Dmitri Yu. Paraschuk; T. A. Kulakov; O. Yu. Nedopekin; N. V. Chigarev; X. Y. Pan; S. M. Avanesyan

doi:10.1117/12.239859

6 May 1996 Precise photodetection with shot-noise-limit sensitivity for picosecond laser measurements: detection of small surface gradients with photodeflection technique

Dmitri Yu. Paraschuk, T. A. Kulakov, O. Yu. Nedopekin, N. V. Chigarev, X. Y. Pan, S. M. Avanesyan

Author Affiliations +

Proceedings Volume 2799, Atomic and Quantum Optics: High-Precision Measurements; (1996) https://doi.org/10.1117/12.239859
Event: International Conference on Coherent and Nonlinear Optics, 1995, St. Petersburg, Russian Federation

Abstract

We present the simple and very effective radio frequency lock-in technique for precise measurements with cw-pumped mode-locked lasers. The technique is applied for the photodeflection transient spectroscopy that allowed to reach the sensitivity to surface displacement about one femtometer. We use the method for probing hypersound generation and propagation in a semiconductor plate.

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Dmitri Yu. Paraschuk, T. A. Kulakov, O. Yu. Nedopekin, N. V. Chigarev, X. Y. Pan, and S. M. Avanesyan "Precise photodetection with shot-noise-limit sensitivity for picosecond laser measurements: detection of small surface gradients with photodeflection technique", Proc. SPIE 2799, Atomic and Quantum Optics: High-Precision Measurements, (6 May 1996); https://doi.org/10.1117/12.239859

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