Results 261 to 270 of about 32,417 (310)

Laser tube for a frequency-stabilized laser

SPIE Proceedings, 1999
In 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
openaire   +1 more source

Frequency-stabilized laser-diode-pumped Nd:YAG laser

Optics Letters, 1989
We describe a frequency-stabilized diode-pumped Nd:YAG laser that is actively frequency stabilized relative to a reference Fabry-Perot cavity using the Pound-Drever technique. We describe the servo loop and the measurement of its noise and gain performance and demonstrate its ability to reduce the laser frequency noise close to the shotnoise limit of ...
D, Shoemaker, A, Brillet, C N, Man, O, Crégut, G, Kerr   +4 more
openaire   +2 more sources

Long-term laser frequency stabilization using fiber interferometers

Review of Scientific Instruments, 2015
We report long-term laser frequency stabilization using only the target laser and a pair of 5 m fiber interferometers, one as a frequency reference and the second as a sensitive thermometer to stabilize the frequency reference.
Jia Kong, Vito Giovanni Lucivero, Morgan W Mitchell   +2 more
exaly   +2 more sources

Five-year frequency stability of a Zeeman stabilized laser

Applied Optics, 1989
A five-year record of the lockpoint frequency of a Zeeman stabilized laser shows an observed drift rate of 0.3 +/- 0.5 MHz/yr following an initial drift of 5.7 +/- 2.2 MHz/yr in the first eighteen months of intermittent operation. A second Zeeman laser drifted at a rate of -0.8 +/- 1.0 MHz/yr over the last 2.5 yr; the frequency drift was -0.2 +/- 0.6 ...
G S, Sasagawa, M A, Zumberge
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Frequency stability of a Zeeman-stabilized laser

Applied Optics, 1985
The frequency of a commercial hard-sealed He–Ne laser has been stabilized to the center of the discharge gain profile using the mode splitting caused by an axial magnetic field. The absolute frequency has been measured repeatedly during intermittent operation over 20 months. Its drift over most of this period has been 2.6 ± 0.7 MHz/yr.
openaire   +2 more sources

Laser-frequency division and stabilization

Physical Review A, 1984
The current method for measuring an optical frequency relative to the primary time standard, the cesium beam standard at ~9.2 GHz, utilizes a complex frequency synthesis chain involving harmonics of laser and klystron sources. The method has been extended recently to the visible region,1 to the 633 nm He-Ne laser locked to a molecular iodine line, with
R. G. DeVoe, R. G. Brewer
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SSFLC for laser frequency stabilization

SPIE Proceedings, 2000
The paper describes the application of a Surface-Stabilized Ferroelectric Liquid Crystal (SSFLC) cell as a polarization switch in a frequency stabilization system of a Zeeman laser interferometer. The FLC cell is used as a field-controlled (lambda) /4 plate in which the optic axis can rapidly alternate between two positions, thereby alternatively ...
M. Matuszczyk, T. Matuszczyk, Anatoli A. Muravski, Janusz Rzepka   +3 more
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Stabilization of a laser radiation frequency

Measurement Techniques, 1968
The computations and experimental investigations thus carried out show that the use of an external resonator as a frequency discriminator of a laser provides it with a low-inertia automatic frequency control system. The design developed for a high-Q optical resonator provides it with a long-term frequency stability.
A. Ya. Leikin, V. S. Solov'ev
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Optogalvanic Laser Frequency Stabilization

1986
The CO2 laser radiation field intensity is large enough and when is varied it introduces significant changes in the laser plasma microscopic parameters such as discharge sidelight intensity, plasma impedance and gas temperature. From among these parameters, a distinct interest is given to plasma impedance, because it is possible to establish a direct ...
D. C. Dumitras, D. C. A. Dutu, V. Draganescu, N. Comaniciu   +3 more
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Frequency Stabilization of AlGaAs Lasers

36th Annual Symposium on Frequency Control, 1982
Abstract : Performances of semiconductor lasers have been remarkably improved by the demand of the optical communications industry. Recently, a single longitudinal mode, CW oscillation at room temperature has been realized. The price of each laser has been reduced as low as $250. These lasers are mostly oscillated in the near-infrared, and the coherent
M. Ohtsu, H. Tsuchida, T. Tako
openaire   +1 more source