- Injection seeder
Injection seeders are devices that direct the output of small "seed"
laser s into the cavity of a much larger laser to stabilize the latter's output. Most seed lasers are stable, single-frequency lasers that emit within the linewidth of the larger laser's gain medium. The single frequency encourages the larger laser to lase in a singlelongitudinal mode , and the seed laser can also improve the laser's spatial profile and improve the M2 parameter. Seed lasers can be continuous or pulsed. Seeding a pulsed laser can reduce variations in the output energy and timing (jitter ) from pulse to pulse, and smooth out temporal variations within the pulse. Many commercial lasers use alaser diode as a seeding source.ee also
*
Laser construction
*Q-switching
*Mode locking References
* [http://www.physik.tu-darmstadt.de/lqo/projects/spotlight/injection.html Spotlight: Injection Seeding] , Technical University of Darmstadt
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