Laser Tuning with an Acousto-Optic Lens.
DEPARTMENT OF THE NAVY WASHINGTON D C
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A pulsed laser having a laser gain medium of broadband output is tuned to essentially monochromatic output. An acousto-optic cell is driven with an acoustic wave which varies linearly in frequency, causing the laser beam to be resolved into a number of essentially monochromatic focal points. The focused beam of the desired wavelength is reflected to the output through one or more apertures which block out the unwanted wavelengths. Author
- Lasers and Masers