Frequency doubling of focused laser beams for high pulse energy at 471nm

Xin Wang; Frank Kallmeyer; Sha Wang; A. Ding; Hans-Joachim Eichler

doi:10.1117/12.823007

19 February 2009 Frequency doubling of focused laser beams for high pulse energy at 471nm

Xin Wang, Frank Kallmeyer, Sha Wang, A. Ding, Hans-Joachim Eichler

Proceedings Volume 7194, Laser Resonators and Beam Control XI; 71940M (2009) https://doi.org/10.1117/12.823007
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

An actively Q-switched Nd:GSAG laser with 942nm wavelength was frequency doubled in a critically type-I phase-matched LBO. Maximum pulse energy of 8mJ with 300ns pulse duration at 471 nm was obtained with 19mJ incident radiation at 10Hz. The corresponding conversion efficiency was 42%. The frequency doubling of a focused Gaussian beam involves spatially dependent phase mismatching due to beam divergence. It decreases the conversion efficiency and deteriorates the beam quality. According to the theoretical calculation, elliptical focusing was used to improve the second harmonic beam quality and slightly increase the conversion efficiency.

Citation Download Citation

Xin Wang, Frank Kallmeyer, Sha Wang, A. Ding, and Hans-Joachim Eichler "Frequency doubling of focused laser beams for high pulse energy at 471nm", Proc. SPIE 7194, Laser Resonators and Beam Control XI, 71940M (19 February 2009); https://doi.org/10.1117/12.823007

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