Results 251 to 260 of about 83,581 (314)
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Momentum gaps and laser stability
Journal of Applied Physics, 1993The impact of a momentum gap on the stability of a semiconductor laser is examined. We identify a condition which, when satisfied, suppresses the first order perturbation on both the intensity and the phase of such a laser. The same condition also provides a uniform intensity envelope in the laser cavity.
T. G. Brown, L. Olofsson
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Ellipsometry with a stabilized Zeeman laser
Applied Optics, 1990A novel ellipsometric method was introduced in an earlier publication, based on a rotating plane polarized beam. We show that the method is substantially improved by using a stabilized Zeeman laser as the light source.
L, Singher, A, Brunfeld, J, Shamir
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Stabilized Biasing of Semiconductor Lasers
Bell System Technical Journal, 1983In this paper we analyze the design of biasing and control circuits for semiconductor lasers in a generalized context based on an idealized laser characteristic. In particular, we address three major design considerations: whether to bias the laser above or below threshold, how to stabilize the optical output levels independent of variation in the ...
Robert G. Swartz, Bruce A. Wooley
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Understanding laser stabilization using spectral hole burning [PDF]
Optics Express, 2007 There have recently been several studies of the performance of laser frequency stabilization using spectral holes in solids, instead of an external cavity, as a frequency reference.
S Kroll, L Rippe
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Laser tube for a frequency-stabilized laser
SPIE Proceedings, 1999In the present work the frequency characteristics of a two- frequency stabilized laser, when the strata appears in the active medium, are given.
M. A. Fedotov, Elena G. Chulyaeva
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Frequency stability and stabilization of a chemical laser
IEEE Journal of Quantum Electronics, 1978We have built a low-power CW HF/DF chemical laser, designed to achieve high-frequency stability. Measurements are reported which characterize the instantaneous spectral width of the laser output to less than one part in 1011( \Delta\nu kHz) and the variations in absolute frequency of this emission with time to four parts in 1010( \Delta\nu = \pm20 kHz)
J. Munch, M. Kolpin, J. Levine
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Fiber-based acetylene-stabilized laser
2008 Conference on Precision Electromagnetic Measurements Digest, 2008We describe a fiber-based acetylene-stabilized laser, where light is coupled to free-space only to pass through the acetylene cell. The system is constructed using standard components, which makes the approach cost effective and straightforward to implement. The Doppler-free spectrum of acetylene is detected using a simple collinear pump-probe geometry,
Ahtee, V., Merimaa, M., Nyholm, K.
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Chemical Stabilization of Laser Dyes.
1984Abstract : Irradiation of ethanol solutions of coumarin laser dye lasers produces products which absorb at the lasing wavelength. This results in attenuation of dye laser output through interference of stimulated emission. A major photoprocess which produces material which absorbs at the lasing wavelength is dye sensitized solvent oxidative ...
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Stabilized Lasers and Precision Measurements
Science, 1978This article traces the development of stabilized lasers from the Massachusetts Institute of Technology passive-stabilization experiments of the early 1960's up through the current epoch of highly stabilized helium-neon and carbon dioxide and continuous wave dye lasers. The utility, present performance, and limitations of stabilized lasers as standards
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IEEE Journal of Quantum Electronics, 1986
In the soliton laser, feedback from a pulse-shaping fiber enables the production of ultrafast pulses of controlled shape and width. Successful operation, however, requires maintenance of the correct optical phase of this feedback. We describe a simple but effective servo control that locks to the required phase, while simultaneously stabilizing output ...
F. Mitschke, L. Mollenauer
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In the soliton laser, feedback from a pulse-shaping fiber enables the production of ultrafast pulses of controlled shape and width. Successful operation, however, requires maintenance of the correct optical phase of this feedback. We describe a simple but effective servo control that locks to the required phase, while simultaneously stabilizing output ...
F. Mitschke, L. Mollenauer
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