High-power propagation effects in different designs of a Faraday isolator

Efim A. Khazanov

doi:10.1117/12.382068

14 April 2000 High-power propagation effects in different designs of a Faraday isolator

Efim A. Khazanov

Proceedings Volume 3927, Optical Pulse and Beam Propagation II; (2000) https://doi.org/10.1117/12.382068
Event: Symposium on High-Power Lasers and Applications, 2000, San Jose, CA, United States

Abstract

Absorption of laser radiation in the optical element leads to depolarization resulting in limitation of isolation ratio. In order to suppress this self-induced depolarization two new optical designs were recently suggested. They utilize two 22.5 degree Faraday rotators and a half wave plate or reciprocal rotator between them. Both schemes allow an increase in isolation ratio at the same beam power. However all other parameters of the isolators were not investigated. All three designs are compared from the viewpoint of the first pass through the isolator. We derive equations for power losses, amplitude and phase distortions as a function of the laser beam power. Both crystal and glass magneto-optical media are investigated. It is shown that the scheme with reciprocal rotator is the best from the viewpoint of the first pass parameters as well as from the viewpoint of the isolation ratio. The results obtained for a Gaussian beam in the present and previous studies are generalized for the case of super Gaussian and flat intensity distribution as well. It is shown that the flat- shaped beam induces the weakest distortions and the Gaussian one induces the strongest ones.

Citation Download Citation

Efim A. Khazanov "High-power propagation effects in different designs of a Faraday isolator", Proc. SPIE 3927, Optical Pulse and Beam Propagation II, (14 April 2000); https://doi.org/10.1117/12.382068

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