Compound cavity theory of resonant phase modulation in laser self-mixing ultrasonic vibration measurement

Yufeng Tao; Ming Wang; Dongmei Guo

doi:10.1117/1.OE.55.7.074107

19 July 2016 Compound cavity theory of resonant phase modulation in laser self-mixing ultrasonic vibration measurement

Yufeng Tao, Ming Wang, Dongmei Guo

Author Affiliations +

Optical Engineering, Vol. 55, Issue 7, 074107 (July 2016). https://doi.org/10.1117/1.OE.55.7.074107

Abstract

The theoretical basis of self-mixing interference (SMI) employing a resonant phase modulator is explored to prove its tempting advantages. The adopted method induces a pure phase carrier without increasing system complexity. A simple time-domain signal process is used to estimate modulation depth and precisely track vibrating trail, which promises the flexibility of measuring ultrasonic vibration regardless of the constraint of the Bessel functions. The broad bandwidth, low speckle noise, compact, safe, and easy operating SMI system obtains the best resolution of a poor reflection environment. Numerical simulation discusses the spectrum broadening and errors due to multiple reflections. Experimental results agree with theory coherently and are compared with laser Doppler vibration meter showing a dynamical error better than 20 nm in ultrasonic vibration measurement.

Citation Download Citation

Yufeng Tao, Ming Wang, and Dongmei Guo "Compound cavity theory of resonant phase modulation in laser self-mixing ultrasonic vibration measurement," Optical Engineering 55(7), 074107 (19 July 2016). https://doi.org/10.1117/1.OE.55.7.074107

Published: 19 July 2016

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available