III Novel submillimeter-size lenses have been fabricated in compound semiconductor substrates by mesa etching and heat treatment. These precision large-numerical-aperture microlenses are well suited for diode lasers and laser arrays in miniaturized systems. Alaser array has been efficiently coupled to an external cavity by a microlens array to achieve coherent phase locking. As part of a semico...

introduction: laser-assisted vaporization of prostate tissue by means of the potassiumtitanyl- phosphate (ktp) laser is in clinical use. alternative laser sources are available but are lacking clinical experience.the 980 nm wavelength diode laser provides good hemostasis, in addition to a more rapid ablation rate. the aim of this study is approving the capability, feasibility, and good post-ope...

We study theoretically the dynamics of a multistripe laser array with an external cavity formed by either a single or two off-axis feedback mirrors, which allow to select a single lateral mode with transversely modulated intensity distribution. We derive and analyze a reduced model of such an array based on a set of delay differential equations taking into account transverse carrier grating in ...

It is shown that the interference between amplified spontaneous emission into the nonlasing supermode and the laser field of a semiconductor laser array causes spatial hole burning, which couples the dynamics of the amplified spontaneous emission with the laser field. In particular, phase locking between the amplified spontaneous emission and the lasing mode leads to the formation of a spectral...

The laser array waveguide designed and simulated in this thesis is highly mode discriminant and able to take advantage of spatially dispersive high-power pumping sources, such as, semiconductor laser diode arrays. The waveguide measures 5cm x 0.5cm and consists of an array of five 4Am x 4Am single mode Nd +3 doped glass lasers embedded in double cladding to improve total pumping efficiency. The...

An all optical implementation of quantum information processing with semiconductor macroatoms is proposed. Our quantum hardware consists of an array of quantum dots and the computational degrees of freedom are energy-selected interband optical transitions. The quantum-computing strategy exploits exciton-exciton interactions driven by ultrafast multicolor laser pulses. Contrary to existing propo...

Rate equations analysis of phase-locked semiconductor laser arrays has been carried out. I t was found that for given (laser) current densities, the photon density distribution in the array elements is that pmticular one which maximizes the total photon density. Theresults of this analysis were then combined with the waveguiding properties of the laser array waveguide, yielding a basic model of...

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