Laser diode phase-shifting interferometer insensitive to the changes in laser power

Yukihiro Ishii; Ribun Onodera

doi:10.1117/12.211864

14 June 1995 Laser diode phase-shifting interferometer insensitive to the changes in laser power

Yukihiro Ishii, Ribun Onodera

Proceedings Volume 2544, Interferometry VII: Techniques and Analysis; (1995) https://doi.org/10.1117/12.211864
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

A phase-shifting interferometer with a laser diode has been studied that is insensitive to the changes in laser power associated with the current variation. The tested phase is measured from six interferograms by using a newly-developed phase-extraction algorithm. The phase is calculated from a least-squares fit to an interferogram including the intensity variation by the power change. The systematic phase error with the periodicity of 2(pi) rad by the power change of the laser diode has been theoretically investigated as compared with the experimental results for the conventional phase-extraction algorithm. A good agreement between them is shown.

Citation Download Citation

Yukihiro Ishii and Ribun Onodera "Laser diode phase-shifting interferometer insensitive to the changes in laser power", Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); https://doi.org/10.1117/12.211864

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