2,799 research outputs found
Laser diode pumped solid state lasers
No full textSolid state lasers have undergone a renaissance since the development of reliable and cheap laser diodes which can be used as pump sources. The result is compact, efficient laser sources which are attractive for a wide range of applications. This review summarizes the properties of laser diodes which are advantageous for pumping solid state lasers and describes the diverse laser materials and configurations of solid state lasers reported in the literature
Coupled cavity modelocking using nonlinear amplitude modulators
No full textA straightforward analysis of the process by which nonlinear amplitude modulators in coupled cavities can lead to enhanced mode-locking is presented. The application of the theory is demonstrated by using second-harmonic generation in an external cavity to mode-lock a Nd:YAG laser yielding 30 ps pulses in a Q-switched and mode-locked pulse train
Coupled cavity modelocking of a Nd:YAG laser using second harmonic generation
No full textThe modelocking of a Nd:YAG laser using second-harmonic generation in an external cavity as the only pulse shortening process is reported. The output of a long pulse Nd:YAG laser was simultaneously modelocked and Q-switched. The average pulse duration was 30-50 ps and the peak power was in the range 60-160 kW
Emission from a bismuth doped chalcogenide glass spanning from 1µm to 2.7µm
No full textWe report emission from a bismuth doped chalcogenide glass with a full width half maximum of 850 nm. The quantum efficiency and lifetime were 32% and 175 µs. We report two new bismuth emission bands at 2000 and 2600 nm
Frequency modulated modelocked laser diode pumped Nd:glass laser
No full textThe 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
A high efficiency, laser-diode-pumped continuous wave miniature Nd:glass laser
No full textThe laser-diode-pumped, actively mode-locked Nd:glass laser has recently been shown to be a good source of picosecond pulses. Subpicosecond pulses have been obtained by using self-starting additive pulse mode-locking (APM), where the Nd:glass laser was pumped with a krypton laser. An intensity threshold for the onset of self-starting APM indicates the need to develop high-power, high-slope efficiency, laser-diode-pumped Nd:glass lasers, if self-starting APM is to be achieved in this all solid-state system
Coupled cavity modelocking of a Nd:YAG laser using second harmonic generation
No full textRecently it has been demonstrated that intracavity second harmonic generation (SHG) In a Nd:YAG laser can lead to mode locking with pulse durations of ~ 100 ps at 532 nm. Other work has shown that nonlinear processes in an external coupled cavity can effectively mode lock a laser. These two mechanisms are combined to mode lock a Nd:YAG laser using SHG as the nonlinearity
Laser diode-pumped additive pulse mode-locked Nd:glass laser
No full textThere has recently been much interest in the mode-locking of solid-state lasers using the technique of additive pulse mode-locking (APM). This technique has been shown to yield much shorter pulses than active mode-locking in a number of laser systems including Nd:YAG, Nd:YLF, and Nd:glass. Nd:glass is of particular interest for its very broad fluorescence linewidth (~19nm). Krausz et al. have reported pulses as short as 380 fs from an APM Nd:glass laser pumped by a krypton-ion laser. This pump source was required to obtain high enough power from the Nd:glass laser for the APM process to be self-starting. In this paper we report subpicosecond operation of an APM laser-diode-pumped Nd:glass (i.e., all solid-state) laser
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