منابع مشابه
Efficient high-peak-power AlGaInAs eye-safe wavelength disk laser with optical in-well pumping.
We have demonstrated an efficient high-peak-power AlGaInAs eye-safe wavelength disk laser at 1555 nm. The quantum defect and the thermal load are significantly reduced by pumping the quantum well directly. The overall conversion efficiency is enhanced over three times compared with the barrier pumping method. With a pump peak power of 3.7 kW, an output peak power of 0.52 kW is generated at a pu...
متن کاملSpatial filters for high-peak-power multistage laser amplifiers.
We describe spatial filters used in a Nd:glass laser with an output pulse energy up to 300 J and a pulse duration of 1 ns. This laser is designed for pumping of a chirped-pulse optical parametric amplifier. We present data required to choose the shape and diameter of a spatial filter lens, taking into account aberrations caused by spherical surfaces. Calculation of the optimal pinhole diameter ...
متن کاملGenerating photoacoustic signals using high-peak power pulsed laser diodes
Photoacoustic signals are usually generated using bulky and expensive Q-switched Nd:YAG lasers, with limited scope for varying the pulse repetition frequency, wavelength and pulse width. An alternative would be to use laser diodes as excitation sources; these devices are compact, relatively inexpensive, and available in a wide variety of NIR wavelengths. Their pulse duration and repetition rate...
متن کاملHigh-peak-power efficient edge-emitting photonic crystal nanocavity lasers.
Record-high edge-emitted peak power was collected from L3 and finite-waveguide two-dimensional photonic crystal nanocavity quantum well membrane lasers at room temperature under single-mode operations. Peak power levels of 230 microW and 540 microW were collected from L3 and finite-waveguide edge-emitters, and their quantum differential efficiencies are 11% and 27%, respectively, limited by the...
متن کاملLaser-induced damage to large core optical fiber by high peak power laser
In this paper we present a study of laser damage to large core multimode glass optical fibers by high peak laser power of up to 175 kW. Fibers samples prepared with polymer coatings having different refractive indices were tested in a twopoint bend tester while transmitting laser light. The peak power used in the experiment clearly differentiated the performance among the samples. A polymer coa...
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ژورنال
عنوان ژورنال: Photonics Letters of Poland
سال: 2013
ISSN: 2080-2242
DOI: 10.4302/plp.2013.3.07