Mirrorless, Distributed-Feedback, Ultraviolet, Tunable, Narrow-Linewidth, Solid State Laser
Patent, Filed 15 Nov 96, patented 19 May 98
DEPARTMENT OF THE NAVY WASHINGTON DC
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A mirrorless, distributed-feedback DFB. ultraviolet, tunable, narrow-linewidth, solid state laser for remote sensing and medical applications is disclosed. Optical pumping in the DFB laser is accomplished using a frequency quadrupled. 10 Hz., Q-switched, NdYAG laser operating at 266 nm. The pump beam is diffracted off a grating 2400 grooves per mm. into two parts. The two beams are subsequently recombined at the side face of the Cedoped crystal 8 mmx8 mmx30 mm at an angle of about 29about 81 degrees. The resulting spatially periodic excitation within the Ce-doped gain medium due to the interferring pump beams determines the operating wavelength of the DFB laser.
- Lasers and Masers