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This paper report on cw UV generation by intracavity frequency doubling of a laser diode pumped Praseodymium (Pr)-doped:YLF laser operating at 523.6 nm. A lens of 50 mm focal length was used to focus the pump beam into the laser crystal. For the generation of UV radiation a beta-barium-borate (BBO)-crystal was placed in the beam waist of the cavity, located between mirrors.
The continuous wave, diode pumped laser operation of Pr3+:YLiF4 (Pr:YLF) was reported. In contrast to other solid-state lasers, Pr-lasers need only a single nonlinear step for generation of wavelengths in the UV. For instance, UV-lasers can be realized in a simple and robust way by intracavity frequency doubling of Pr-lasers, operating on the fundamental wavelength in the visible spectral region....
Here we first report the first demonstration of passive mode locking in a Ti-sapphire laser end-pumped Tm3+,Ho3+:YAG laser utilizing ISBTs in InGaAs/AlAsSb quantum wells grown on an InP substrate. The experimental setup is schematically shown in Fig. 1. The pump source is a tunable Ti-sapphire laser with a maximum output power of 2.2 W at 785 nm, corresponding to the peak absorption of the Tm3+, Ho3+:YAG...
The authors report on the spectroscopy and laser results of diode pumped Pr-doped fluorides. We obtained efficient laser emission in the visible range with LiYF4, LiLuF4 and LiGdF4 crystals.
Excitation mechanisms and requirements on materials, and pump sources for crystalline up-conversion lasers will be discussed. Using suitable pump- and resonator arrangements significant improvement of existing results concerning room temperature up-conversion lasers could be achieved.
We present an efficient in-band-pumped Er(0.2 at.%):Sc2O3-laser at 1581 nm with a maximum output power of 0.95 W and a maximum slope efficiency of 31%.
This paper reports on new results regarding the generation of 320 nm wavelength both in continuous wave and pulsed mode by actively Q-switching of the cw Pr-laser. For the cw experiments, a frequency doubled optically pumped semiconductor laser is used providing 1.6 W of linear polarized laser radiation at 480 nm with a nearly diffraction limited beam.
In this work we investigate visible transitions of Pr in the crystal Pr:LiLuF4. In particular we will report on the growth, emission and absorption spectroscopy as well as laser action at four different wavelengths. Findlay-Clay and Caird analysis have been carried out in order to characterise the cavity and the crystal quality. To the best of our knowledge the reported slope efficiencies are the...
A magnesium-oxide doped periodically poled lithium-niobate with segments of cascaded poling periods as a nonlinear crystal for intracavity frequency doubling of an optically pumped semiconductor disk-laser to the green spectral range is presented. Results show temperature-dependent second harmonic generation and a maximum output power of 62 mW at 525 nm corresponding to a 24% conversion efficiency.
Visible lasing and frequency doubling of semiconductor and diode laser pumped Pr3+:LiLuF4 will be presented. Output powers of 550 mW in the visible spectral region and 261 mW at 320 nm are demonstrated.
19 mW of continuous-wave ultraviolet radiation at 320 nm with ~9% optical-to-optical efficiency is demonstrated by intracavity frequency-doubling of a Pr:LiYF4 laser, excited by an optically pumped semiconductor laser.
Using an optically pumped semiconductor laser as pumping source nearly 0.5 W cw and 0.8 W maximum output at 50% pump duty cycle are achieved from a room temperature Er3+:LiLuF4 upconversion laser at 552 nm.
Summary form only given. Laser oscillation in continuous wave regime in Pr/sup 3+/:YLiF/sub 4/ in the red spectral range is reported. The system is pumped at 480 nm using an optically pumped semiconductor (OPS) laser for the first time.
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