253 J at 0.2 Hz, LD pumped cryogenic helium gas cooled Yb:YAG ceramics laser.

A 253 J with 26 ns at 0.2 Hz laser performance was demonstrated using a LD pumped cryogenically cooled Yb:YAG ceramics laser amplifier. A high energy storage of 344 J was achieved with a stored energy density of 0.

High efficiency 12.5 J second-harmonic generation from CsLiB6O10 nonlinear crystal by diode-pumped Nd:glass laser.

A 12.5 J second-harmonic generation with 71.5% conversion efficiency at 0.

Curve-fitting method for pure spectrum measurement of femtosecond laser pulses by a pinhole pair.

We present a curve fitting method for measuring the spectral distribution of femtosecond laser pulses with Young's double-pair interference. The method is applicable to cancel the influence of the mutual coherent portion in the spectrum measurement.

Spectral properties of second-harmonic generation at 800 nm in a BiB(3)O(6) crystal.

We have investigated spectral distribution and walk-off effect of second-harmonic generation in a 3-mm-long type I BiB(3)O(6) crystal. Linearly turning ability of the BiB(3)O(6) crystal is confirmed for wavelengths around 800 nm. In addition, the walk-off effect of fundamental beams is quantitatively measured by introducing a little vertical polarization component into pumping fundamental pulses.