Results 141 to 150 of about 3,036,443 (205)
Q-Switched Induced Gain Switching of a Two-Transition Cascade Laser [PDF]
Optics Express, 2012 A gain-switched laser transition, of a two-laser-transition cascade laser, that is driven by the adjacent laser transition which is Q-switched is demonstrated using a Ho3+ -doped fluoride fiber laser. Q-switching the 5|6 ?
Jianfeng Li +2 more
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Vitreolysis With the Q-Switched Laser
Archives of Ophthalmology, 1985We present an overview concerning the current status of photodisruptive methods used in the treatment of pathologic changes in the vitreous space. In one series of 320 cases studied, 65% of the planned dissections of pathologic structures were successful. In a second series of 34 more complicated cases, the success rate was even lower.
F, Fankhauser +2 more
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Q-Switched Laser Goniopuncture
Archives of Ophthalmology, 1974A 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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Q-switched Ti:Er:LiNbO3 waveguide laser
Optical and Quantum Electronics, 1999Q-switched operation of a Ti:Er:LiNbO3 waveguide laser has been achieved with up to 2.4 W pulse peak power (0.18μJ) at 2kHz repetition frequency with an intracavity Mach–Zehnder-type amplitude modulator. A theoretical model has been developed to describe the laser operation.
MAIO S. +4 more
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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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