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Frequency modulated modelocked laser diode pumped Nd:glass laser

D. W. Hughes, J.R.M. Barr, D.C. Hanna

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Abstract

The mode-locked Nd:glass laser is of interest as a source of short pulses because of its large fluorescence bandwidth (5.3 THz). This lasing medium is particularly suited to pumping by laser-diode arrays, and the performance of several AM mode-locked laser-diode-pumped Nd:glass lasers has been reported. We present what we believe to be the first report of an FM mode-locked laser-diode-pumped Nd:glass laser. The laser cavity used in our experiment was an astigmatically compensated 3-mirror cavity. The active medium, a 1.2 mm thick disk of highly doped LG760 glass, was inserted at the focus of the cavity at Brewster's angle. With 1.5% output coupling we have obtained a power of 35mW for 400mW incident on the glass.

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What this paper is about

The mode-locked Nd:glass laser is of interest as a source of short pulses because of its large fluorescence bandwidth (5.3 THz). This lasing medium is particularly suited to pumping by laser-diode arrays, and the performance of several AM mode-locked laser-diode-pumped Nd:glass lasers has been reported. We present what we believe to be the first report of an FM mode-locked laser-diode-pumped Nd:glass laser. The laser cavity used in our experiment was an astigmatically compensated 3-mirror cavity. The active medium, a 1.2 mm thick disk of highly doped LG760 glass, was inserted at the focus of the cavity at Brewster's angle. With 1.5% output coupling we have obtained a power of 35mW for 400mW incident on the glass.

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Available abstract

The mode-locked Nd:glass laser is of interest as a source of short pulses because of its large fluorescence bandwidth (5.3 THz). This lasing medium is particularly suited to pumping by laser-diode arrays, and the performance of several AM mode-locked laser-diode-pumped Nd:glass lasers has been reported. We present what we believe to be the first report of an FM mode-locked laser-diode-pumped Nd:glass laser. The laser cavity used in our experiment was an astigmatically compensated 3-mirror cavity. The active medium, a 1.2 mm thick disk of highly doped LG760 glass, was inserted at the focus of the cavity at Brewster's angle. With 1.5% output coupling we have obtained a power of 35mW for 400mW incident on the glass.

Key concepts: Laser, Materials science, Optics, Lasing threshold, Laser pumping, Optoelectronics, Laser power scaling, Injection seeder

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