Article

84 dB amplification, 0.46 J in a 10 Hz output diode-pumped Nd:YLF ring amplifier with phase-conjugated wavefront corrector.

Hamamatsu Photonics K. K., Hamamatsu, Shizuoka, Japan.
Optics Express (impact factor: 3.59). 06/2010; 18(13):13927-34.
Source: PubMed

ABSTRACT A diode-pumped joule class in a 10 Hz output Nd:YLF ring amplifier has been developed. A phase conjugate plate was developed as a wavefront corrector for the residual wavefront distortion of an Nd:YLF rod. We have demonstrated a 0.46 J output of 10 ns pulse duration at 10 Hz repetition rate with 1.5 nJ of input energy. The effective gain of the ring amplifier system was 84.8 dB. To our knowledge, this is the highest magnification with joule-level output energy in a single-stage amplifier system that has ever been built. As a preamplifier system, this system contributed a demonstration of 21.3 J in a 10 Hz output diode-pumped Nd:glass zigzag slab laser system with a stimulated Brillouin scattering- phase conjugation mirror. We describe a robust and effective method of wavefront correction for high-energy laser systems.

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Keywords

10 Hz repetition rate
 
10 ns pulse duration
 
effective method
 
high-energy laser systems
 
highest magnification
 
input energy
 
phase conjugate plate
 
residual wavefront distortion
 
stimulated Brillouin scattering- phase conjugation mirror
 
wavefront correction
 
wavefront corrector
 

Takashi Sekine