Journal
OPTICS EXPRESS
Volume 25, Issue 2, Pages 1123-1130Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.25.001123
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Funding
- TRIUMF
- Canada's National Laboratory for Particle and Nuclear Physics and Accelerator-based Science
- Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant [386343-2011]
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A continuously tunable titanium: sapphire (Ti: Sa) laser self-seeded by an extended grating cavity was demonstrated and characterized. By inserting a partially reflecting mirror inside the cavity of a classic single-cavity grating laser, two oscillators are created: a broadband power oscillator and a narrowband oscillator with a prism beam expander and a diffraction grating in Littrow configuration. By coupling the grating cavity oscillation into the power oscillator, a power-enhanced narrow-linewidth laser oscillation is achieved. Compared to the classic grating laser, this simple modification significantly increases the laser output power without considerably broadening the linewidth. With most of the oscillating laser power confined inside the broadband power cavity and lower power incident onto the grating, the new configuration also allows higher pump power, which is typically limited by the thermal deformation of the grating coating at high oscillation power. (C) 2017 Optical Society of America
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