Laser Physics
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The Kuramoto-Sivashinsky equation for the defect-deformation instability of a surface-stressed nanolayer
Laser Physics - Tập 19 Số 3 - Trang 538-543 - 2009
Linearly-polarized Tm-doped double-clad fiber laser
Laser Physics - Tập 20 - Trang 1752-1755 - 2010
We report a linearly polarized Tm doped fiber laser. The fiber laser was set up by using a piece of polarization maintaining Tm doped double clad fiber of 5 m length as gain medium and a polarization beam splitter as a polarization selector. The fiber laser was pumped by a fiber pigtailed laser diode working at 790 nm with a maximum output power of 90 W. The linearly polarized Tm laser operated at......
Third harmonic generation of Nd:glass laser with novel composite deuterated KDP crystals
Laser Physics - Tập 20 - Trang 1923-1926 - 2010
A novel composite partially deuterated KDP crystal used for frequency tripling is experimentally demonstrated for the first time in this paper. The deuteration level is used as a degree of freedom to alter the phase matching wavelength so as to increase the bandwidth acceptance. The results show that the acceptance bandwidth based on such crystal can be increased by a factor of 3 comparing with th......
Optical parameters measurement for diagnostic and photodynamic therapy of human cervical adenocarcinoma (HeLa) cell line
Laser Physics - - 2012
Dressed states analysis of lasing without population inversion in a three-level ladder scheme: Approximate analytic time dependent solutions
Laser Physics - Tập 19 - Trang 290-304 - 2009
A dressed-state study of lasing without population inversion from a three level atom interacting with a bi-chromatic laser field, in the ladder configuration, is formulated. We allow the atomic system to be dressed by both laser filed photons (double dressing). The evolution of the system under consideration is being explored both analytically and numerically, within the transient regime. Time dep......
Diode-pumped Nd:GAGG-LBO laser at 531 nm
Laser Physics - Tập 22 - Trang 485-488 - 2012
We report a green laser at 531 nm generation by intracavity frequency doubling of a continuous wave (cw) laser operation of a 1062 nm Nd:GAGG laser under in-band diode pumping at 808 nm. A LiB3O5 (LBO) crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the laser. At an incident pump power of 18.5 W, as high as 933 mW of cw output power at ......
Ablation induced by single-and multiple-femtosecond laser pulses in lithium niobate
Laser Physics - Tập 17 - Trang 1378-1381 - 2007
We present results on the surface-damage threshold of lithium niobate after single-and multiple-femtosecond laser pulse irradiation at the pulse duration of 80 fs, with a 800-nm wavelength, and a repetition rate of 1 kHz. The surface-ablation threshold was found to decrease significantly with an increase in the pulse number applied to the surface until reaching an almost constant level due to an i......
CW Nd:LuVO4-GdCa4O(BO3)3 red laser under direct 888 nm pumping
Laser Physics - Tập 21 - Trang 2076-2079 - 2011
We report a red laser at 672 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of a 1343 nm Nd:LuVO4 laser under in-band diode pumping at 888 nm. An GdCa4O(BO3)3 (GdCOB) crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the laser. At an incident pump power of 17.8 W, as high as 1.73 W of CW output p......
Dynamic spectral filter
Laser Physics - Tập 19 - Trang 1809-1818 - 2009
Results of the discussions with N.B. Delone on the perturbation of the atomic transition by a strong nonresonant noise field of electromagnetic radiation are presented. Four examples that are conceptually and mathematically close to each other are considered: spectrum of radiation with the diffusion of phase, spectrum of radiation with the sine phase modulation, atomic absorption lineshape in the ......
Solid-state dye lasers based on PMMA co-doped with PM597 and PM650
Laser Physics - Tập 21 - Trang 981-984 - 2011
In order to enhance the laser performances, solid-state samples based on polymethyl methacrylate (PMMA) co-doped with pyrromethene 597 (PM597) and pyrromethene 650 (PM650) were prepared. With SHG of Q-switched Nd:YAG laser (532 nm, ∼15 ns) pumping the samples, laser emission from the mixtures of PM597 and PM650 both in liquid solution and incorporated into solid polymeric matrices were investigate......
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