Development of efficient forward Raman pulse compression system for e-beam-excited KrF laser ASHURA

Yuji Matsumoto; Eiichi Takahashi; Isao Matsushima; Isao Okuda; Yoshiro Owadano; Kenji Kuwahara

doi:10.1117/12.375129

11 January 2000 Development of efficient forward Raman pulse compression system for e-beam-excited KrF laser ASHURA

Yuji Matsumoto, Eiichi Takahashi, Isao Matsushima, Isao Okuda, Yoshiro Owadano, Kenji Kuwahara

Proceedings Volume 3886, High-Power Lasers in Energy Engineering; (2000) https://doi.org/10.1117/12.375129
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

We have developed a simple method of power multiplication. In this method, multi-path forward Raman amplifier is used. By multi-path amplification, it is possible to transfer almost all energy from long duration pump pulse to short Stokes pulse with small numbers of beams. The demonstration experiments of this method have been carried out by using a short pulse Stokes generator, a forward Raman Preamplifier and a forward Raman pulse compressor. Pump light is one of the sequential output pulses from the e-beam excited KrF laser system ASHURA. Short STokes pulse is generated in the Stokes generator filled with a mixture of methane and hydrogen gases as Raman scattering medium. The Stokes pulse is amplified to almost half of pump intensity by the Raman preamplifier also filled with same kinds of mixed scattering medium. The Raman pulse compressor is a 5-path amplifier with total Raman gain of 10. In latest experiments, the output Stokes pulse grew up to 3.2 times pump intensity by Raman conversion of pump power of 70 percent. The waveform of output Stokes was similar shot pulse as initial Stokes light.

Citation Download Citation

Yuji Matsumoto, Eiichi Takahashi, Isao Matsushima, Isao Okuda, Yoshiro Owadano, and Kenji Kuwahara "Development of efficient forward Raman pulse compression system for e-beam-excited KrF laser ASHURA", Proc. SPIE 3886, High-Power Lasers in Energy Engineering, (11 January 2000); https://doi.org/10.1117/12.375129

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