Results 251 to 260 of about 86,748 (306)
Some of the next articles are maybe not open access.
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
openaire +1 more source
1978
So far we have investigated SMBS under conditions that exclude the influence of the scattered light on the operation of the exciting-radiation generators. It is of interest also to consider another situation, where there is a strong coupling between the scattering medium and the source of the exciting light (the laser).
openaire +1 more source
So far we have investigated SMBS under conditions that exclude the influence of the scattered light on the operation of the exciting-radiation generators. It is of interest also to consider another situation, where there is a strong coupling between the scattering medium and the source of the exciting light (the laser).
openaire +1 more source
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
openaire +2 more sources
Infrared laser radiation by a passive Q-switch medium in the Q-switching process
Annual Meeting Optical Society of America, 1986The techniques of Q-switching and mode locking, using saturated-absorption media, are widely utilized in modern laser instruments. Taking account of this fact, we regarded the laser active and passive Q-switch media in a laser system as a combination of two coupled four-level subsystems and analyzed the behavior in terms of rate equations for these ...
Yuan-Qi Lin +3 more
openaire +1 more source
RETINA, 1986
Fifty-nine eyes underwent vitreous surgery (vitreolysis) with the Q-switched Nd: YAG laser. This was used to cut vitreoretinal bands and membranes in 16 eyes and to clear persistent vitreous opacities in 25 eyes. The use of appropriate specialized contact lenses and modification of the standard slit-lamp delivery system were essential for vitreous YAG ...
H L, Little, R L, Jack
openaire +2 more sources
Fifty-nine eyes underwent vitreous surgery (vitreolysis) with the Q-switched Nd: YAG laser. This was used to cut vitreoretinal bands and membranes in 16 eyes and to clear persistent vitreous opacities in 25 eyes. The use of appropriate specialized contact lenses and modification of the standard slit-lamp delivery system were essential for vitreous YAG ...
H L, Little, R L, Jack
openaire +2 more sources
Q-switching technologies: limitations and opportunities: finding the right Q-switch
SPIE Proceedings, 2009Q-switches for laser ignition applications must meet a unique set of requirements. The inherent challenges to providing extremely reliable, compact, practical, and cost effective devices are daunting. The capabilities and limitations of various passive and active technologies will be explored and compared against generic laser driven ignition ...
openaire +1 more source
Review of Scientific Instruments, 1977
A Q switch which shortens the ringing time in pulsed NMR equipment is described. It uses a field-effect transistor as the Q-switching element. A convenient method of generating the control signal is shown. The device performs well and is simple to construct and adjust.
openaire +2 more sources
A Q switch which shortens the ringing time in pulsed NMR equipment is described. It uses a field-effect transistor as the Q-switching element. A convenient method of generating the control signal is shown. The device performs well and is simple to construct and adjust.
openaire +2 more sources
2014
Q-switching is a method to generate laser pulses with a short pulse duration and high peak power. In this method, the fast, giant pulse is generated by allowing the pumping process to build up a population inversion and gain inside the laser cavity without oscillations, which are larger than the normal values under free-running operation. This is done
openaire +1 more source
Q-switching is a method to generate laser pulses with a short pulse duration and high peak power. In this method, the fast, giant pulse is generated by allowing the pumping process to build up a population inversion and gain inside the laser cavity without oscillations, which are larger than the normal values under free-running operation. This is done
openaire +1 more source
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)
openaire +2 more sources
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.
openaire +2 more sources