Pulse selection from a mode-locked TE CO2 laser output using a resonant acousto-optic modulator

Yu-Lin Wang; Richard S. Eng; Michael Groden; Hsian Pei Chou; Victor H. Hasson

doi:10.1117/12.308083

12 May 1998 Pulse selection from a mode-locked TE CO₂ laser output using a resonant acousto-optic modulator

Yu-Lin Wang, Richard S. Eng, Michael Groden, Hsian Pei Chou, Victor H. Hasson

Proceedings Volume 3268, Gas and Chemical Lasers and Intense Beam Applications; (1998) https://doi.org/10.1117/12.308083
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

The pulse separation and associated range ambiguity of a CO₂ laser radar using a pulse burst waveform consisting of 1.3 ns mode-locked pulses spaced 40 ns apart was successfully doubled to 80 ns and 12 m respectively by suppressing every alternate pulse. This was done by sending the mode-locked laser output beam with 40 ns pulse spacing through a resonant Raman-Nath acousto-optic modulator driven at 18.75 MHz which is 1.5 times the drive frequency used to intracavity mode-lock the CO₂ laser transmitted. The spatial filtering of the diffracted pulses results in the suppression of the alternate pulses to better than 15 dB. The throughputs for the unsuppressed pulses were greater than 95%. The laser radar capability in detecting large targets,

Citation Download Citation

Yu-Lin Wang, Richard S. Eng, Michael Groden, Hsian Pei Chou, and Victor H. Hasson "Pulse selection from a mode-locked TE CO₂ laser output using a resonant acousto-optic modulator", Proc. SPIE 3268, Gas and Chemical Lasers and Intense Beam Applications, (12 May 1998); https://doi.org/10.1117/12.308083

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