Lasing threshold reduction in grating-tuned cavities
- Department of Physics, University of Toronto and the Ontario Laser and Lightwave Research Centre, Toronto, Ontario M5S 1A7 (Canada)
A new geometry for grating-tuned cavities that reduces optical losses from the gratings, lowers the lasing threshold, and enhances the laser output is described and tested. We achieved these enhancements by feeding back into the cavity light that is normally lost through grating reflections. The new geometry is tested on two grazing-incidence dye laser cavities: one that resembles a Littman{endash}Metcalf design and demonstrates the essential principle of the new arrangement, and one that introduces modifications necessary to allow single-longitudinal-mode operation without mode hopping over a tuning range of {approximately}15 cm{sup {minus}1}. {copyright} 1997 Optical Society of America
- OSTI ID:
- 544755
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 24 Vol. 36; ISSN 0003-6935; ISSN APOPAI
- Country of Publication:
- United States
- Language:
- English
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