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We present the use of an optically-pumped saturable absorber (SA) inside Nd:YVO4 and Cr:LiSAF lasers as a viable method to remotely control the laser mode of operation. CW operation in both lasers was obtained by cooling the SAs down to -10degC with a thermo-electric cooler. Two types of the SAs were used: the first one, originally designed as the active region of a semiconductor disk laser, was employed...
We describe a continuous-wave optical parametric oscillator operated within a semiconductor disk laser, free of relaxation oscillations associated with neodymium-based systems. Parametric threshold occurred at 1.4 W primary (diode) pump power and 8.5 W yielded 205 mW idler.
Power scaling by increasing the pump spot area is shown to be intrinsically limited in semiconductor disk lasers with diamond heatspreaders. An output power of 9 W is reported for a 1060 nm device.
The slope efficiency of semiconductor disk lasers is seen to be reduced at high output coupling. Careful adjustment of the cavity and pump mode sizes is also necessary for high efficiency and good beam quality.
~1.7 W output power at 2.3 mum is demonstrated from a semiconductor disk laser pumped by a 905 nm high-power pulsed semiconductor laser. The thermal characteristics and wavelength shift are studied over the 100-200 ns pump pulse.
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