Results 261 to 270 of about 11,012 (313)

Q-Switched Laser Goniopuncture

Archives of Ophthalmology, 1974
A new approach to treatment of glaucoma has been tried, in which Q-switched laser bursts are delivered to the anterior chamber angle. Nonthermal effects emerge as an important factor in the biological action of such laser impulses. Laser-induced defects in the filtering zone produced by Q-switched impulses have been traced histologically.
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The Q-switched Ruby Laser in Glaucoma

Ophthalmology, 1984
A 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, 1997
Recent 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 unidirectional ring lasers

IEEE Journal of Quantum Electronics, 1969
Traveling-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, J. Turkov, V. Kuprishov, V. Antonyanz, V. Kruglov   +4 more
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Unpolarized EO Q-switched laser

Applied Optics, 1983
A 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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Laser characteristics of a Q-switched Ho:Tm:Cr:YAG

Applied Optics, 1988
It is demonstrated that Cr is an effective sensitizer for the 2-micrometer Ho:YAG laser at 295 K. (AIP)
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Q switched Neodymium:YAG Laser Iridotomy

Ophthalmology, 1984
Twenty 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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Optimization of Q-switched lasers

IEEE Journal of Quantum Electronics, 1991
The 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-switching of semiconductor lasers

IEEE Journal of Quantum Electronics, 1977
A scheme for Q -switching semiconductor lasers is proposed and analyzed. The method is based upon electrooptic switching of the Bragg reflectivity of the grating reflectors forming the cavity of the semiconductor laser. The basic configuration, the operating principles, and the dynamic behavior of these lasers are described.
T. Tsukada, null Chung Tang
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Passively Q-switched microchip lasers and applications!

2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003) (IEEE Cat. No.03TH8666), 1998
Diode-pumped passively Q-switched Nd:YAG microchip lasers are compact, economical, all-solid-state sources of coherent, subnanosecond, multikilowatt pulses at high repetition rates, with applications in diverse areas.
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