84 dB amplification, 0.46 J in a 10 Hz output diode-pumped Nd:YLF ring amplifier with phase-conjugated wavefront corrector.
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.
Sekine
Takashi
T
Hamamatsu Photonics K. K., Hamamatsu, Shizuoka, Japan. t-sekine@crl.hpk.co.jp
Matsuoka
Shin-ichi
S
Yasuhara
Ryo
R
Kurita
Takashi
T
Katai
Ryuji
R
Kawashima
Toshiyuki
T
Kan
Hirofumi
H
Kawanaka
Junji
J
Tsubakimoto
Koji
K
Norimatsu
Takayoshi
T
Miyanaga
Noriaki
N
Izawa
Yasukazu
Y
Nakatsuka
Masahiro
M
Kanabe
Tadashi
T
D004867:Equipment Design; D054023:Lasers, Semiconductor; D053758:Nanoparticles; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D009354:Neodymium; D055095:Optics and Photonics / Q000295:instrumentation* / Q000379:methods
D009354:Neodymium