Achromatic phase-shifters for broadband interferometry

Parameswaran Hariharan; Philip E. Ciddor

doi:10.1117/12.211868

14 June 1995 Achromatic phase-shifters for broadband interferometry

Parameswaran Hariharan, Philip E. Ciddor

Proceedings Volume 2544, Interferometry VII: Techniques and Analysis; (1995) https://doi.org/10.1117/12.211868
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Many interferometric measurements require the introduction of a controllable phase shift in one of the beams. This is commonly done by changing the optical path length by means of a tilting glass plate or a mirror mounted on a piezo-electric translator, but the change in the phase of the beam is then strongly dependent on the wavelength. An alternative way to shift the phase of a beam is by means of the Pancharatnam phase. This is the phase shift experienced by a light beam as a result of a cyclic change in its state of polarization. We show how the Pancharatnam phase can be exploited to produce a series of achromatic phase-shifters. One such device uses mica half-wave and quarter-wave retarders and produces a phase shift proportional to the rotation of one element which is independent of the wavelength from 450 nm to 700 nm. Another uses two quarter-wave retarders and two ferroelectric liquid-crystal devices which can be switched to produce phase shifts of 0 degrees, 90 degrees, and 180 degrees which are nearly independent of the wavelength over a wide range of wavelengths.

Citation Download Citation

Parameswaran Hariharan and Philip E. Ciddor "Achromatic phase-shifters for broadband interferometry", Proc. SPIE 2544, Interferometry VII: Techniques and Analysis, (14 June 1995); https://doi.org/10.1117/12.211868

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Phase shifts

Polarization

Wave plates

Interferometry

Mica

Optical spheres

Ferroelectric LCDs

Show All Keywords

Keywords/Phrases

Search In:

Publication Years