Single-element holographic nonspatial filter

Jacques E. Ludman; Timothy D. Upton; Daniel Coolidge

doi:10.1117/12.487975

4 June 2003 Single-element holographic nonspatial filter

Jacques E. Ludman, Timothy D. Upton, Daniel Coolidge

Proceedings Volume 5005, Practical Holography XVII and Holographic Materials IX; (2003) https://doi.org/10.1117/12.487975
Event: Electronic Imaging 2003, 2003, Santa Clara, CA, United States

Abstract

We have previously described a holographic laser apparatus that 'cleans up' a laser beam by discarding off-axis rays. The device uses two matched holograms carefully oriented with respect to one another so that the Bragg effect from the first hologram cleans up first one direction and then the second hologram cleans up the orthogonal direction. The device works well and reduces the beam divergence to 0.8 mrad with a 3.0 mm thick hologram. However, there are practical difficulties with this configuration including sensitivity to the mutual alignment of the holograms and a cleaned-up beam which is inconveniently not in the same horizontal plane as the input laser beam. We describe here a much simpler design using a single hologram that improves performance and avoids these difficulties.

Citation Download Citation

Jacques E. Ludman, Timothy D. Upton, and Daniel Coolidge "Single-element holographic nonspatial filter", Proc. SPIE 5005, Practical Holography XVII and Holographic Materials IX, (4 June 2003); https://doi.org/10.1117/12.487975

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