To date nearly all LII is carried out using Q-switched, flashlamp pumped Nd/YAG lasers with pulse lengths ~10 ns. Although these lasers are well developed and readily available for use in the laboratory and in commercial instruments, they are bulky, inefficient and often the most costly part of an LII system. Cheaper, more compact lasers are becoming available, but very few are able to match th...

In use of saturable Cr(4+):YAG crystals, we have demonstrated the stable Q-switched and mode-locked (QML) operation of the Nd:LuVO(4) laser. The operation range of QML in use of the Cr(4+):YAG is larger than that use of SESAM and NLM. The obtained shape of Q-switched envelope, repetition rate and pulse energy are demonstrated to depend on the initial transmittance of the Cr(4+):YAG and reflecti...

BACKGROUND AND DESIGN The removal of benign, aesthetically important, pigmented lesions can be effectively treated with multiple modalities. Selective removal of the pigment by lasers is becoming increasingly popular. A three-center trial evaluated the effectiveness of the frequency-doubled Q-switched neodymium (Nd):YAG laser (532 nm, 2.0-mm spot size, 10 nanoseconds) in removing benign epiderm...

Two-photon excitation of a trifluorophore (6-carboxyfluorescein, N,N,N',N'-tetramethyl-6-carboxyrhodamine and cyanine-5 monofunctional dye) labeled DNA, which has a scaffold of 26 nucleotides, was achieved using focused laser light of a Q-switched Nd-YAG laser (1064 nm). The observed fluorescence signature (emission ratio from the three fluorophores) of the labeled DNA after two-photon excitati...

Passively Q-switched ceramic Nd3+:YAG lasers with ceramic Cr4+:YAG saturable absorbers are demonstrated. When the lasers are pumped by a 1-W cw laser diode, optical-optical efficiency as great as 22% is obtained with Cr4+:YAG of initial transmission ranging from 94% to 79%. The results are similar to those in their crystalline counterparts. The operation of Brewster's angle and the polarization...

Macular amyloidosis (MA) is the subtlest of cutaneous varieties amyloidosis. In general, treatment MA disappointing. Hence, this study was aimed at comparing two modalities for same. To compare efficacy 30% TCA chemical peel with Q switched Nd-YAG laser 1064nm in macular 50 patients attending our Dermatology outpatient department were enrolled study. The involved application 25 an interval 2 we...