Title :
A copper “HyBrID” laser of high-beam quality using an axial unstable cavity
Author :
Coutance, Pascal ; Naylor, Graham ; Pique, Jean Paul
Author_Institution :
Lab. de Spectrometrie Phys., Univ. Joseph Fourier, Grenoble, France
fDate :
10/1/1995 12:00:00 AM
Abstract :
A 100 W copper “HyBrID” laser (CuHBr laser) fitted with an unstable cavity is examined in the far field and compared with a conventional copper vapor laser of similar beam dimensions. In the far field the divergence is about 100 μradians for the HyBrID laser. The copper vapor laser produces a slightly larger central divergence with significant high divergent structure. This is explained to be due to pulse shape and differences in radial variations of the gain onset timing of the two types of laser, improved beam quality is important for efficient pumping of titanium sapphire lasers and micromachining
Keywords :
copper; gas lasers; laser beams; laser cavity resonators; laser stability; optical pumping; Cu; Cu vapour laser; HBr; HyBrID laser; axial unstable cavity; beam dimensions; central divergence; copper vapor laser; efficient pumping; far field; gain onset timing; high divergent structure; high-beam quality; improved beam quality; laser beam pumping; micromachining; pulse shape; titanium sapphire lasers; unstable cavity; Atomic beams; Copper; Electron tubes; Gas lasers; Hydrogen; Laser beams; Laser excitation; Power lasers; Pump lasers; Temperature;
Journal_Title :
Quantum Electronics, IEEE Journal of
