Sodium atom chemistry laser of visible waveband

A technology of atomic chemistry and lasers, which is applied in the direction of lasers, phonon exciters, laser components, etc., can solve the problems of high cost and difficult implementation, and achieve the effect of easy implementation and high laser brightness

Inactive Publication Date: 2009-05-20
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Sodium atom chemistry laser of visible waveband

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[0032] The object of the present invention is to provide a technical route for realizing 569nm output sodium atom chemical laser in the visible band and a laser device based on the technical route. Through this device, metastable energy storage particles SiO(b 3 ∏) and the excited state particle Na(4d 2 D). After extraction by resonant cavity oscillation, a 569nm laser is obtained.

[0033] Technical route of the present invention is:

[0034] Silicon atoms are obtained by pyrolysis of silane at high temperature; through silicon atoms and N 2 O reaction to obtain metastable energy storage particles—SiO(b 3 ∏); then SiO(b 3 ∏) undergoes near-resonant energy transfer with gas-phase Na atoms to obtain excited state particles—SiO(b 3 ∏), and in Na 4d 2 D and 3p 2 The number of particles flipped between P, oscillate and extract through the optical resonant cavity, and emit 569nm laser in the visible band.

[0035] The laser device based on the above technical route mainly ...

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Abstract

The invention relates to a chemical laser output device for sodium atoms in visible wave band, in particular the chemical laser for the sodium atoms in the visible wave band. N2O and main air current passing through a high-temperature tubular furnace hearth intersect and react in a gas outlet to form a SiO(b<3> pi) synthetic region; Na steam and the main air current passing through the synthetic region are mixed to form a near resonant energy transmission region; the region produces a sodium atom-Na(4d<2>D) in an excited state; the outer side of the near resonant energy transmission region is provided with an optical resonant cavity; the direction of optical axis of the optical resonant cavity is vertical to the direction of the main air current coming out from the near resonant energy transmission region; a spectrograph is arranged on an output optical circuit of the optical resonant cavity; and the spectrograph is connected with a signal of a computer testing control system through a circuit. The laser device has the advantages of compact structure and easy realization and control.

Description

technical field [0001] The invention relates to a sodium atom chemical laser output device in the visible band, in particular to a sodium atom chemical laser in the visible band. Background technique [0002] In the 1980s, researchers discovered metastable SiO(b 3 Π) is a good energy storage particle, its energy is close to 3.5eV, and its lifetime is on the order of 10ms. Experiments confirmed that SiO(b 3 Π) can perform efficient near-resonant energy transfer with T1 (535nm), Ga (417nm), Na (569, 616nm) and other atoms and excite these atoms from the ground state to the excited state. Studies have shown that Na atoms and SiO(b 3 ∏) near-resonance energy transfer is the easiest to achieve and the most effective. Thus, the concept of sodium atom chemical laser was formed, and its optimum luminous wavelength is 569nm, which belongs to the visible band. Currently existing chemical lasers are all in the infrared band, so sodium atom chemical lasers extend the wavelength ran...

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Application Information

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IPC IPC(8): H01S3/00H01S3/08H01S3/02H01S3/14H01S3/227
Inventor 王增强多丽萍桑凤亭金玉奇于海军汪健
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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