Results 211 to 220 of about 26,111 (260)
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2007
The current state of the art in mid-infrared fiber lasers is reviewed in this chapter. The relevant fiber-host materials such as silicates, fluorides, chalcogenides, and ceramics, the fiber, pump, and resonator geometries, and the spectroscopic properties of rare-earth ions are introduced. Lasers at transitions ranging from 1.9 to 4 μm occurring in the
Pollnau, Markus, Jackson, Stuart D.
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The current state of the art in mid-infrared fiber lasers is reviewed in this chapter. The relevant fiber-host materials such as silicates, fluorides, chalcogenides, and ceramics, the fiber, pump, and resonator geometries, and the spectroscopic properties of rare-earth ions are introduced. Lasers at transitions ranging from 1.9 to 4 μm occurring in the
Pollnau, Markus, Jackson, Stuart D.
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Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1985
Abstract Successful production of microwave radiation by Cherenkov masers has prompted an investigation into their feasibility for submillimeter and far infrared wavelength generation. A theoretical examination of output parameters such as frequency and small signal gain has been conducted for an easily fabricated resonator geometry.
B. Johnson, J. Walsh
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Abstract Successful production of microwave radiation by Cherenkov masers has prompted an investigation into their feasibility for submillimeter and far infrared wavelength generation. A theoretical examination of output parameters such as frequency and small signal gain has been conducted for an easily fabricated resonator geometry.
B. Johnson, J. Walsh
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Infrared Physics, 1977
Abstract The principal methods of achieving tunable infrared laser radiation are reviewed. The operation of one system, the cw spin flip laser, is discussed in detail.
C.R. Pidgeon, S.D. Smith
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Abstract The principal methods of achieving tunable infrared laser radiation are reviewed. The operation of one system, the cw spin flip laser, is discussed in detail.
C.R. Pidgeon, S.D. Smith
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INFRARED PLASMA DIAGNOSTICS WITH LASERS
Infrared Physics, 1976Abstract Infrared lasers have rendered possible measurements of plasma parameters in a range not accessible using either optical or microwave techniques. Diagnostic methods based on the refraction and scattering of radiation by free electrons are discussed.
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Reports on Progress in Physics, 1979
The principles and operating characteristics of several tunable infrared lasers are discussed. These tunable sources include high-pressure molecular gas lasers, nonlinear frequency converters, Raman frequency converters, and solid-state tunable lasers. The sources are compared in terms of their useful linewidth, output power, efficiency and wavelength ...
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The principles and operating characteristics of several tunable infrared lasers are discussed. These tunable sources include high-pressure molecular gas lasers, nonlinear frequency converters, Raman frequency converters, and solid-state tunable lasers. The sources are compared in terms of their useful linewidth, output power, efficiency and wavelength ...
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Laser measurements in the infrared
Physics World, 1996Lasers that operate in the mid-infrared (~1–20 μm) have many applications, ranging from molecular spectroscopy to monitoring pollution in the atmosphere. However, it is difficult to design systems for making accurate measurements of laser power, energy and beam profile in the mid-infrared because several problems arise that do not occur in the visible ...
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AIP Conference Proceedings, 1981
This paper reviews the development of infrared diode lasers for automobile exhaust gas analysis and high resolution spectroscopy at the General Motors Research Laboratories. Advances in lead‐salt crystal growth technology and laser fabrication techniques to achieve high temperature operation and wide frequency tuning range will be discussed.
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This paper reviews the development of infrared diode lasers for automobile exhaust gas analysis and high resolution spectroscopy at the General Motors Research Laboratories. Advances in lead‐salt crystal growth technology and laser fabrication techniques to achieve high temperature operation and wide frequency tuning range will be discussed.
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Soviet Journal of Quantum Electronics, 1977
A description is given of an infrared laser defectograph (flaw detector) based on the use of improved temperature sensitive luminescent screens which make visible the CO2 infrared laser radiation transmitted by an investigated object. This defectograph can be used to study the internal structure and microdefects in semiconducting materials which are ...
Evgenii A Vinogradov +8 more
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A description is given of an infrared laser defectograph (flaw detector) based on the use of improved temperature sensitive luminescent screens which make visible the CO2 infrared laser radiation transmitted by an investigated object. This defectograph can be used to study the internal structure and microdefects in semiconducting materials which are ...
Evgenii A Vinogradov +8 more
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Applied Scientific Research, 1967
A rangementer, working at 1,06 μ, using neodymium-doped glass rods, is described. By applying a rotating prism (15000 r.p.m.) as a Q-switch a single pulse is emitted. At a pumpenergy of 55 joules the peakpower is 1 Megawatt and the risetime is 20 nanoseconds. It is shown that the peakvalue of the noise is most important.
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A rangementer, working at 1,06 μ, using neodymium-doped glass rods, is described. By applying a rotating prism (15000 r.p.m.) as a Q-switch a single pulse is emitted. At a pumpenergy of 55 joules the peakpower is 1 Megawatt and the risetime is 20 nanoseconds. It is shown that the peakvalue of the noise is most important.
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Infrared subpicosecond laser pulses with a free-electron laser
Physical Review Letters, 1993Subpicosecond laser pulses (down to 200 fs) have been produced and measured with a free-electron laser oscillator at a wavelength around 8.5 \ensuremath{\mu}m. This has been achieved by running our linear accelerator in a configuration where the electron bunches acquire a quasilinear time-energy relationship while traveling on the side, rather than on ...
, Glotin +4 more
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