A stimulated Brillouin scattered (SBS) tuned laser which utilizes stimula Brillouin scattering wherein the output laser beam produces the acoustic wave that scatters the laser beam to thereby provide the scanning which impacts on a retoreflective grating to provide a change in the frequency of the output laser beam.
A laser using a stimulated Brillouin scattering (SBS) mirror and a moving grating eliminates frequency walkoff of the reflected beams. A laser using a double-SBS mirror prevents frequency walkoff by having the other side of the SBS mirror act as a conjugate moving grating.
Laser pulse generation techniques are disclosed in which two competing non-linear processes, e.g. stimulated Brillouin scattering and laser-induced breakdown are employed in combination to generate a short laser pulse. Narrow linewidth UV radiation amplified to the millijoule level in a XeCl discharge module has been used to generate pulses of less than 200 picoseconds in duration.
A tunable laser using surface acoustic waves in the sides of a piezoelect prism to provide two reflective diffraction gratings for tuning the resonant cavity.
