Atom cooling and trapping light source device
A light source device and atomic cooling technology, which is applied in the field of lasers, can solve problems such as insufficient stability of laser output frequency and cannot meet the needs of high-precision equipment, and achieve the effect of meeting high-precision equipment and improving stability
Active Publication Date: 2014-07-23
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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Problems solved by technology
[0006] In order to solve the problem that the output frequency stability of the laser in the prior art is insufficient and cannot meet the requirements of high-precision equipment, the embodiment of the present invention provides an atomic cooling trapped light source device
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Embodiment 1
[0017] An embodiment of the present invention provides an atomic cooling trapped light source device, see figure 1 , the device includes: a light source main body 1 , a passive cavity 2 , a first photoelectric detection unit 3 , a second photoelectric detection unit 4 , and a servo unit 5 .
[0018] Wherein, the light source body 1 adopts a Littrow structure laser, which includes a semiconductor laser tube, a collimating lens, a diffraction grating, a reflector and a piezoelectric crystal driver 1a for output signal frequency of the light source body. Its specific structure is well known to those skilled in the art, and a detailed description is omitted here. The piezoelectric crystal driver 1a can be a piezoelectric ceramic sheet with mirrors installed. Due to its electrostrictive properties, when different voltages are applied to it, the cavity length will change, thereby causing the output frequency of the light source to change.
[0019] Specifically, the passive cavity i...
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The invention discloses an atom cooling and trapping light source device, belonging to the technical field of lasers. The atom cooling and trapping light source device comprises a light source main body, wherein the light source main body comprises a semiconductor laser tube, a collimating lens, a diffraction grating and a reflecting mirror. The atom cooling and trapping light source device additionally comprises a piezoelectric crystal driver which is used for adjusting output signal frequency of the light source main body, a passive cavity for laser output by the light source main body to pass through, a first photoelectric detection unit which is used for detecting intensity of laser passing through the passive cavity and generating a first photoelectric detection signal, a second photoelectric detection unit which is used for detecting intensity of laser output by the light source main body and generating a second photoelectric detection signal, and a servo unit which is used for outputting a first voltage control signal to the piezoelectric crystal driver according to the first photoelectric detection signal output by the first photoelectric detection unit and the second photoelectric detection signal output by the second photoelectric detection unit. The atom cooling and trapping light source device has the advantages that the frequency stability of output signals is high and the requirement of high-accuracy equipment can be satisfied.
Description
technical field [0001] The invention relates to the technical field of lasers, in particular to an atom cooling trapped light source device. Background technique [0002] Magneto-optical traps are an effective means of trapping neutral atoms, and are widely used in cold atomic physics experiments, quantum optics, and quantum information. In order to ensure that the atoms in the magneto-optical trap can be decelerated (cooled) when they run in any direction of the initial velocity, usually in the magneto-optical trap, two pairs of atom cooling trapping light sources facing each other in three-dimensional space are used. [0003] The existing atomic cooling and trapping light source usually adopts a Littrow structure laser, which usually includes a semiconductor laser tube, a collimating lens, a diffraction grating and a reflector. The laser light emitted by the semiconductor laser tube is collimated by the collimating lens and then incident on the diffraction grating. Or sp...
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IPC IPC(8): H01S5/0687
Inventor 涂娟王谨詹明生
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI