Results 251 to 260 of about 126,256 (297)

Frequency stabilized lasers: optical feedback effects

Applied Optics, 1981
Two simple systems have been described for stabilizing the frequency of a 2-mW internal mirror 633-nm He-Ne laser. This paper shows that small amounts of optical feedback will seriously reduce their performance. Their relative sensitivity to optical feedback from a plane mirror is compared.
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Frequency stabilized diode lasers

AIP Conference Proceedings, 1991
Frequency stabilized semiconductor lasers have many applications in spectroscopy, metrology and coherent communication systems. The last trends and results on frequency stabilization of laser diodes are presented in the report.Three laser systems are considered: a solitary laser diode, a diode with integrated composite cavity, and a semiconductor laser
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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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Frequency-stabilized injection-locked laser

SPIE Proceedings, 2000
For the light source of the gravitational wave detector, the injection-locked Nd:YAG laser has been developed in which high power with high frequency stability is required. The frequency of the injection-locked laser is stabilized to the high- finesse Fabry-Perot optical resonator to suppress frequency noise down to 2 X 10-2 Hz/(root)Hz at 1 kHz.
Mitsuru Musha, Takeshi Kanaya, Ken-ichi Ueda   +2 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
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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 measurements on polarization-stabilized He–Ne lasers

Applied Optics, 1988
We present detailed stability measurements on six He-Ne lasers which have been stabilized by matching the intensity of the two orthogonal polarization modes. The frequencies of five different lasers were closely monitored for 1 month. Another laser was studied for 2 yr.
T M, Niebauer, J E, Faller, H M, Godwin, J L, Hall, R L, Barger   +4 more
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Frequency Stabilization of Semiconductor Lasers

2017
Stability of laser frequency is one of the most important performances. The frequency stabilization involves basically three parts: a reference frequency, i.e., the target frequency the laser frequency is to be locked, a frequency discriminator, and a method of feedback to tune the laser. The absorption lines of atoms or molecules are mostly often used
Zujie Fang, Haiwen Cai, Gaoting Chen, Ronghui Qu   +3 more
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Intermode beat stabilized laser with frequency pulling

Applied Optics, 1994
A frequency-stabilized two-mode He-Ne laser has been developed. The intermode beat frequency of the experimental laser was approximately 600 MHz for a 25-cm cavity. The laser frequency in which the mode stands is pulled to the center of the gain curve (frequency pulling).
S, Yokoyama, T, Araki, N, Suzuki
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Frequency stabilization of gas lasers

IEEE Journal of Quantum Electronics, 1965
The state of the art in the field of frequency stabilization of gas lasers is surveyed. A brief discussion of the methods employed to determine the frequency stability of lasers is followed by a listing of the principle causes of frequency instability.
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