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Q-switching the Erbium-YAG Laser
Journal of Modern Optics, 1994An erbium-YAG laser has been Q-switched by two methods; a mechanical technique employing a rotating output coupler and electro-optically utilizing a LiNbO3 crystal. The performances of each technique are assessed and compared. Pulse durations of 150 to 850 ns have been produced, with pulse energies of 1 to 16 mJ depending on the technique used.
Wannop, N.M. +3 more
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Q-switched unidirectional ring lasers
IEEE Journal of Quantum Electronics, 1969Traveling-wave operation of a ruby laser has been obtained by the use of a 5° Faraday rotator. Mode selection in a TW ruby laser with electrooptical Q switching is discussed.
A. Mikaeliane +4 more
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The Q-switched Ruby Laser in Glaucoma
Ophthalmology, 1984A pilot study evaluated the safety and effectiveness of a Q-switched ruby laser in the treatment of both pupillary-block (10 eyes) and open-angle glaucoma (4 eyes). All patients had either poor visual acuity or had previously failed with conventional surgery. We created a patent iridotomy in all eyes, with one pulse in eight.
A L, Robin, I P, Pollack
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Laser Skin Resurfacing with the Q-switched Nd:YAG Laser
Dermatologic Surgery, 1997Recent studies have shown that char-free pulsed carbon dioxide lasers are useful in the treatment of rhytids. Other infrared lasers have also been observed to induce changes in the skin.In this pilot study, we evaluated the rhytid resurfacing capability of the Q-switched neodymium:yttrium-aluminum-garden (QS Nd:YAG) laser at 1064 nm as compared with ...
D J, Goldberg, J, Whitworth
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Q switched Neodymium:YAG Laser Iridotomy
Ophthalmology, 1984Twenty phakic eyes of 19 patients underwent Q-switched neodymium:YAG laser iridotomies for angle-closure glaucoma. Eleven eyes were previous argon laser failures. Penetration was achieved in each case with several shots in one session. Complications were minor and transient.
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Unpolarized EO Q-switched laser
Applied Optics, 1983A novel laser design is given that uses a special polarizing device to generate unpolarized Q-switched laser energy with a conventional EO Pockels cell. The special polarizing device, which replaces the linear polarizer normally used in conventional Q-switched resonators, allows solid-state lasers to operate efficiently at high repetition rates.
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SPIE Proceedings, 1990
One of the most attractive features of fibre lasers is their ability to produce significant pulse powers when Q-switched. Potential applications for such lasers include non-linear switching, OTDR measurements, materials processing and range-finding. We have, already demonstrated 100W:15ns pulses from a diode pumped Nd3+ fibre-laser and have obtained ...
Bill Barnes +4 more
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One of the most attractive features of fibre lasers is their ability to produce significant pulse powers when Q-switched. Potential applications for such lasers include non-linear switching, OTDR measurements, materials processing and range-finding. We have, already demonstrated 100W:15ns pulses from a diode pumped Nd3+ fibre-laser and have obtained ...
Bill Barnes +4 more
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Laser characteristics of a Q-switched Ho:Tm:Cr:YAG
Applied Optics, 1988It is demonstrated that Cr is an effective sensitizer for the 2-micrometer Ho:YAG laser at 295 K. (AIP)
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Optimization of Q-switched lasers
IEEE Journal of Quantum Electronics, 1991The authors extend the standard rate equation analysis to obtain expressions for the maximum peak power, maximum pulse energy, and minimum pulsewidth of a single Q-switched output pulse; the maximum power efficiency of a repetitively Q-switched laser; and the corresponding cavity output couplings.
J.J. Zayhowski, P.L. Kelley
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Q-switched operation of microchip lasers
Optics Letters, 1991With a novel Q-switching technique, 6-ns output pulses are produced from a single-mode Nd:YAG microchip laser pumped with 120 mW of cw optical power. Rate-equation analysis indicates that with a pump power of 500 mW, Q-switched Nd:YAG microchip lasers having subnanosecond pulses and peak powers of several kilowatts are feasible.
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