High Power Quasi-cw Laser Diode Array and System Design.

Risk Reduction and Advancement of High Power Quasi-CW Laser Diode Pump Arrays

The reliability of moderate to high power solid-state lasers that can operate autonomously over a sufficiently long period, are constrained by their laser diode pump arrays (LDAs). For laser remote sensing instruments operating in space, the reliability and lifetime of LDAs are particularly critical because of high development and launch cost of instruments and their inaccessibility in space. T...

Thermal characteristics of high-power, long pulse width, quasi-CW laser diode arrays

2-micron solid-state lasers operating at moderate to high pulse energies require high power quasi-CW laser diode arrays (LDAs) operating at a nominal wavelength of 792 nm with pulse durations of at least one millisecond. This long pulse duration is one of the main causes of limited lifetimes for these arrays. Such relatively long pulse durations cause the laser diode active region to experience...

CW THz Wave Generation System with Diode Laser Pumping

High cw power using an external cavity for spectral beam combining of diode laser-bar emission.

In extension to known concepts of wavelength-multiplexing diode laser arrays, a new external cavity is presented. The setup simultaneously improves the beam quality of each single emitter of a standard 25 emitter broad-area stripe laser bar and spectrally superimposes the 25 beams into one. By using this external resonator in an "off-axis" arrangement, beam qualities of Mslow2<14 and Mfast2<3 w...

Diode-pumped cw bulk Er:Yb:glass laser.

ontinuous-wave laser operation of bulk Er:Yb:phosphate glass pumped at 980 nm by an InGaAs index-guided diode laser has been achieved for the first time to our knowledge, with 2 mW of output power obtained at 1.54 microm. To optimize pumping conditions and to investigate the effects of pump wavelength, the Er(3+):Yb(3+) glass disk has also been pumped by a Ti:Al(2)O(3) laser at 960 and 980 nm, ...