Continuously tunable Ti sapphire laser covering all gain spectral lines and method thereof

Abstract

The invention relates to a continuously tunable Ti sapphire laser covering all gain spectral lines and a method thereof. The continuously tunable Ti sapphire laser comprises a pumping source, a telescope system, an optical resonant cavity, a Ti sapphire crystal and a birefringent filter. The laser beams emitted by the pumping source act on a titanium sapphire crystal in the optical resonant cavityafter being focused by the telescope system, fluorescence is generated in the stimulated radiation process of titanium sapphire, laser is generated in the mode selection and amplification process ofthe optical resonant cavity, and the laser is oscillated in the optical resonant cavity and then is transmitted by a second plane mirror to form the laser output. Meanwhile, a motor controller drivesa motor to drive a rotary table to adjust the included angle between the projection of the optical axis of the birefringent filter on the light passing surface and the laser incident surface, scanningis conducted from the starting angle of 18.4 degrees to 36.2 degrees, and therefore the output laser covering all gain spectral lines is obtained. According to the invention, the uniform and continuous 700-1000nm wavelength tuning can be realized under the condition of not changing the interference level, and the operation stability of the laser is not influenced.

Description

technical field [0001] The invention relates to the technical field of lasers, more specifically, to a continuously tunable Ti:sapphire laser covering all gain spectrum lines and a method for covering all gain spectrum lines. Background technique [0002] Ti:sapphire crystal has a wide fluorescence spectral range (700nm~1000nm), which can cover the absorption peaks of alkali metal atoms such as potassium, rubidium, and cesium. Therefore, the all-solid-state continuous tunable laser with Ti:sapphire as the gain medium can be applied to atomic trapping Research on quantum science such as cooling, spectral analysis, precision measurement and quantum computing. In addition, using frequency doubling technology to obtain blue-violet light can be applied to scientific research in optical clocks, optical storage, and medicine; using optical parametric down-conversion technology to expand the output wavelength to 1550nm, which happens to be the third lowest loss transmission of singl...

AI Technical Summary

Problems solved by technology

The above lasers need to adjust the cavity mirror of the resonator or change the operation mode of the laser during the tuning process, which undoubtedly increases the complexity and instability of the laser, and will affect the output beam of the laser

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