Adaptive compensation of thermally induced aberrations in Faraday isolator by means of a DKDP crystal

V. V. Zelenogorsky; E. E. Kamenetsky; A. A. Shaykin; O. V. Palashov; E. A. Khazanov

doi:10.1117/12.675553

3 February 2006 Adaptive compensation of thermally induced aberrations in Faraday isolator by means of a DKDP crystal

V. V. Zelenogorsky, E. E. Kamenetsky, A. A. Shaykin, O. V. Palashov, E. A. Khazanov

Proceedings Volume 5975, Topical Problems of Nonlinear Wave Physics; 59750I (2006) https://doi.org/10.1117/12.675553
Event: Topical Problems of Nonlinear Wave Physics, 2005, St. Petersburg, Russian Federation

Abstract

In this paper we describe adaptive compensation of thermal lens in a Faraday isolator using a DKDP crystal. Thermal lens measurements were made with a modification of the Hartmann sensor -a 2D scanning Hartmann sensor. This device proved to be convenient and adequate for thermal lens measurements. Our experiments showed that a DKDP crystal does not influence the isolation ratio of Faraday isolator and efficiently compensates thermal lens. The negative effect produced by the thermal lens is estimated as the quantity of power losses from the original beam mode (Gaussian mode in our experiments). Without compensation the losses were measured to be about 5% for 50W of radiation power and were compensated to less than 1% by a negative thermal lens in a few millimeters thick DKDP crystal. Numerical extrapolation of experimental data to a higher powers range showed that for the power up to 200W, power losses can be made less than 5%.

Citation Download Citation

V. V. Zelenogorsky, E. E. Kamenetsky, A. A. Shaykin, O. V. Palashov, and E. A. Khazanov "Adaptive compensation of thermally induced aberrations in Faraday isolator by means of a DKDP crystal", Proc. SPIE 5975, Topical Problems of Nonlinear Wave Physics, 59750I (3 February 2006); https://doi.org/10.1117/12.675553

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