Compensation techniques in speckle interferometry

Rajpal S. Sirohi; Baij Nath Gupta

doi:10.1117/12.498447

7 March 2006 Compensation techniques in speckle interferometry

Rajpal S. Sirohi, Baij Nath Gupta

Proceedings Volume 4101, Laser Interferometry X: Techniques and Analysis; (2006) https://doi.org/10.1117/12.498447
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Anomalies in fringes pattern due to weak defect remain practically hidden when the object is subjected to load in between exposures. Increased load results in more number of fringes. In order to bring out the defective region vividly some procedure to reduce the number of undesired fringes should be adopted. Comparative speckle interferometry compares the response of the test object with that of the master object and the fringe pattern corresponds to the defect when the objects are identically loaded. Surface contours can also be compared. Use of phase shifting in comparative speckle interferometry would give the quantitative estimate of the residual difference.

Citation Download Citation

Rajpal S. Sirohi and Baij Nath Gupta "Compensation techniques in speckle interferometry", Proc. SPIE 4101, Laser Interferometry X: Techniques and Analysis, (7 March 2006); https://doi.org/10.1117/12.498447

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