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Intracavity low-cost scanning MEMS micromirrors are used to control the output beam of Nd:based lasers. Successful Q-switching resulted in pulse durations of 200ns.
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...
Titanium sapphire is a scientific laser of unsurpassed utility. However, the pumping requirements - typically a bulky multiwatt frequency-doubled neodymium laser - do not lend themselves to applications beyond the laser laboratory. In this paper, the design and demonstration of a compact directly diode-laser pumped Ti:sapphire laser is described. In addition, the challenges associated with this approach...
In this paper, we will present our results on different high-power GaSb-based optically pumped semiconductor disk lasers (OPSDLs) emitting in the 1.9-2.8 mum wavelength range, with the emphasis on the power scaling capability of these long-wavelength laser by using the following different concepts: increasing the pumped area, using multiple gain chips and using in-well pumped structures.
Intracavity Raman lasers are a simple means to shift the frequency of solid-state lasers. The authors report on the use of new low birefringence diamond to address this issue in conventional lasers and its subsequent use in a CW Raman laser.
This paper will give further results obtained from introducing electrothermal and electrostatic MEMS within laser cavities with particular attention given to the thermal effects of the micromirror, and new modulation/control prospects. The exploitation of the MEMS devices in solid-state lasers operating at 1.5mum will also be described.
Pump power scaling with spot size is studied experimentally and theoretically in a 1060 nm VECSEL with a diamond heatspreader. The dependence of the efficiency and thermal roll-over on pump spot size are discussed.
We report high-performance single-frequency operation of a directly diode pumped GaSb vertical-external-cavity surface-emitting laser (VECSEL) at 2.3 mum. Tunability of >25 nm with a maximum single frequency output of 0.68 W is demonstrated.
Passive modelocking of a diode-pumped grazing-incidence Nd:GdVO/sub 4/ laser is reported for the first time to our knowledge. Mode-locked slope efficiencies of 30%, output powers up to 4.2 W and pulse durations down to 8.5 ps are reported.
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