Results 241 to 250 of about 60,818 (294)
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IEEE Journal of Quantum Electronics, 1968
Experimental results are presented on the operational characteristics of GaAs laser amplifiers very closely coupled to a laser oscillator. The separation between the oscillator and the amplifier was varied from 0.2 to 2.0 microns. The amplifiers were made by lapping one end at an angle of 10 to 15 degrees.
W. Kosonocky, R. Cornely
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Experimental results are presented on the operational characteristics of GaAs laser amplifiers very closely coupled to a laser oscillator. The separation between the oscillator and the amplifier was varied from 0.2 to 2.0 microns. The amplifiers were made by lapping one end at an angle of 10 to 15 degrees.
W. Kosonocky, R. Cornely
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IEEE Journal of Quantum Electronics, 1984
A laser-amplifying device is proposed which is based on the stimulated decay of excitons in a pure crystal. An estimate is made of the gain of the device. At a typical frequency the gain is found to be appreciably large, thus suggesting practical application of the laser amplifier.
R. Liboff, K. Liu
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A laser-amplifying device is proposed which is based on the stimulated decay of excitons in a pure crystal. An estimate is made of the gain of the device. At a typical frequency the gain is found to be appreciably large, thus suggesting practical application of the laser amplifier.
R. Liboff, K. Liu
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Laser-amplifier gain and noise
Physical Review A, 1993A theoretical study is presented of the gain and the noise spectra of laser amplifiers at pumping rates both above and below the oscillation threshold. The theory is valid for both class- A and class-B laser systems, where the decay rate of the collective atomic dipole moment greatly exceeds the decay rates of the atomic population inversion and the ...
, Loudon +3 more
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Amplifier/compressor fiber Raman lasers
Annual Meeting Optical Society of America, 1987When pump and Stokes pulses copropagate in a fiber Raman laser (FRL), the weaker Stokes spectrum is severely broadened through pump-induced cross-phase modulation (XPM).1 Thus, in an FRL during Raman amplification, the pulse is chirped through XPM, and then the linear anomalous dispersion of a fiber can compress the pulse.
M N, Islam +4 more
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Ultrafast disk lasers and amplifiers
SPIE Proceedings, 2012Disk lasers with multi-kW continuous wave (CW) output power are widely used in manufacturing, primarily for cutting and welding applications, notably in the automotive industry. The ytterbium disk technology combines high power (average and/or peak power), excellent beam quality, high efficiency, and high reliability with low investment and operating
Dominik Bauer +8 more
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Amplified Extended Modes in Random Lasers
Physical Review Letters, 2004We report on a new random laser phenomenon that gives rise to narrow emission modes without requiring optical cavities. Sharp emission peaks are observed experimentally over a broad range of scattering strengths and analyzed in numerical calculations.
MUJUMDAR S. +3 more
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Amplified spontaneous emission (ASE) in laser oscillators and amplifiers
IEEE Journal of Quantum Electronics, 1983Dye-laser oscillators and amplifiers are studied theoretically with inclusion of amplified spontaneous emission (ASE). Assuming pencil-like geometry in both cases, laser signal intensity and ASE intensity are described with appropriate photon-transport equations.
Haag, G., Munz, M., Marowsky, G.
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Laser Oscillator/Amplifier Systems
SPIE Proceedings, 1986The beam characteristics from two 2kW CO 2 lasers coupled as an oscillator/amplifier pair is discussed with particular reference to the power gain and mode structure variations generated in the amplifier section. It was found that gain saturation, plasma saturation and beam clipping phenomenon were the dominant effects governing power amplification ...
S T. Shah, W M. Steen
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Regenerative Ruby Laser Amplifiers
Journal of the Optical Society of America, 1966An ideal laser amplifier was previously treated as a three-medium transmission system. It was predicted that for a given length, the gain would rise with negative attenuation (population inversion), reach a maximum, decrease rapidly at first, and then gradually approach zero asymptotically.The theory has been tested experimentally, using ruby at liquid-
H. Jacobs +5 more
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Amplified Spontaneous Emission Effects In Laser Amplifiers
SPIE Proceedings, 1989We investigate the effects of amplified spontaneous emission on laser amplifier performance. In particular, we are interested in the dependence of gain, signal to noise ratio and efficiency on excitation, facet reflectivity and input laser intensity.
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