Title :
On the super-Gaussian unstable resonators for high-gain short-pulse laser media
Author :
Perrone, Maria Rita ; Piegari, Angela ; Scaglione, Salvatore
Author_Institution :
Dipartimento di Fisica, Lecce Univ., Italy
fDate :
5/1/1993 12:00:00 AM
Abstract :
High-mode-volume, high-energy (70-mJ), high-brightness (1.6×1014 W cm-2 Sr-1) laser beams have been extracted from a high-gain short-pulse XeCl laser with a super-Gaussian unstable resonator. These results are obtained by increasing the cavity magnification factor to 6.6 and the output mirror peak reflectivity to 78%. The output beam divergence is seen to decrease from an initial value of ~0.2 mrad down to nearly diffraction limited after 6 ns for the short gain build-up time of the active medium
Keywords :
brightness; excimer lasers; high-speed optical techniques; laser cavity resonators; xenon compounds; 6 ns; 70 mJ; XeCl laser; active medium; cavity magnification factor; excimer lasers; high mode volume; high-brightness; high-energy; high-gain short-pulse laser media; laser accessories; laser beams; nearly diffraction limited; output beam divergence; output mirror peak reflectivity; short gain build-up time; super-Gaussian unstable resonators; Brightness; Diffraction; Helium; Laser beams; Laser feedback; Laser modes; Mirrors; Reflectivity; Testing; US Department of Transportation;
Journal_Title :
Quantum Electronics, IEEE Journal of
