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Tunable, continuous-wave Ti:sapphire channel waveguide lasers written by femtosecond and picosecond laser pulses

2012; Optica Publishing Group; Volume: 37; Issue: 22 Linguagem: Inglês

10.1364/ol.37.004630

1539-4794

Christos Grivas, C. Corbari, Gilberto Brambilla, Pavlos G. Lagoudakis,

Solid State Laser Technologies

Fabrication and cw lasing at 798.25 nm is reported for femtosecond (fs) and picosecond (ps) laser-inscribed channel waveguides in Ti:sapphire crystals. Lasing in channels written by fs (ps) pulses was obtained above a threshold of 84 mW (189 mW) with a maximum output power and a slope efficiency of 143 mW (45 mW) and 23.5% (7.1%), respectively. The emission wavelength was tuned over a 170 nm range by using a birefringent filter in an external cavity.