Atomic concentration and temperature detection device and method for alkali metal laser gain medium
A technology of temperature detection device and gain medium, which is applied in the field of lasers, can solve the problems of unrealized alkali metal gain medium atomic concentration and temperature measurement, difficulty in accurate measurement, performance impact, etc., and achieve real-time, strong anti-interference, and reliability sex high effect
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[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0037] The method for detecting the atomic concentration and temperature of an alkali metal laser gain medium based on tracer atoms or tracer molecules proposed by the present invention takes a typical rubidium vapor laser as an example, and the tracer atom takes sodium atoms as an example. The invention is also applicable to potassium or a cesium vapor laser.
[0038] figure 1 It is a diagram of the energy level structure of the sodium atom. 2 S 1 / 2 is the ground state, 2 P 1 / 2 and 2 P 3 / 2 is an excited state; D 1 line representation 2 S 1 / 2 → 2 P 1 / 2 light absorption transition, D 2 line representation 2 S 1 / 2 → 2 P 3 / 2 Optical absorption transition; probe laser wavelength can be tuned to D 1 line or D 2 Absorption spectrum detection is performed at the center wavelength of the spectral line of the line light absorption transi...
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