Interferometric analysis of stress-induced birefringence in a rotating glass disk

Peter J. de Groot; Ara Dergevorkian; Tod Erickson

doi:10.1117/12.312941

30 June 1998 Interferometric analysis of stress-induced birefringence in a rotating glass disk

Peter J. de Groot, Ara Dergevorkian, Tod Erickson

Proceedings Volume 3478, Laser Interferometry IX: Techniques and Analysis; (1998) https://doi.org/10.1117/12.312941
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Centripetal forces in a rotating glass disk generate mechanical strains that are visible in polarized light. Dynamic stress birefringence in rotating disks has a practical effect on several classes of optical instruments, including flying-height testers for the data storage industry. We provide a model for stress-induced polarization effects, and describe an interferometric technique for mapping birefringence in a 100-nm diameter disk spinning at 12,000 rpm. The polarization interferometer employs a laser diode and a homodyne phase receiver to detect polarization- dependent phase shifts as small as 1 mrad at a data rate of 250 kHz.

Citation Download Citation

Peter J. de Groot, Ara Dergevorkian, and Tod Erickson "Interferometric analysis of stress-induced birefringence in a rotating glass disk", Proc. SPIE 3478, Laser Interferometry IX: Techniques and Analysis, (30 June 1998); https://doi.org/10.1117/12.312941

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