A vertical cavity surface emitting laser and its control method and control device

Abstract

The invention discloses a control method of a vertical cavity surface emitting laser. By receiving the temperature reading signal of the active area of ​​the vertical cavity surface emitting laser; according to the temperature reading signal, the corresponding cavity length parameter is determined; according to the The cavity length parameter causes the external cavity mirror of the vertical cavity surface emitting laser to be displaced along the direction of the optical path, thereby adjusting the cavity length of the resonant cavity mode, so that the adjusted wavelength of the standing wave of the resonant cavity is the same as that of the vertical cavity surface emitting laser. The peak wavelengths of the gain spectrum in the active region coincide. The present invention realizes that the wavelength of the standing wave of the resonator coincides with the peak wavelength of the gain spectrum of the active region of the vertical cavity surface emitting laser within a wide temperature range, and realizes the resonance of the active region of the surface emitting chip within a wide operating temperature range The optical gain of the cavity mode is maximized, the output optical power is increased, and the emission threshold is reduced. At the same time, the present invention also provides a control device of a vertical cavity surface emitting laser and a vertical cavity surface emitting laser with the above beneficial effects.

Description

technical field [0001] The invention relates to the technical field of novel semiconductor lasers, in particular to a vertical cavity surface emitting laser and its control method and control device. Background technique [0002] Vertical-cavity surface-emitting laser is a semiconductor laser whose light emitting direction is perpendicular to the chip surface. Compared with traditional edge-emitting semiconductor lasers, it has ultra-low electrical power loss, direct detection at the wafer level, easy fiber coupling, single longitudinal mode lasing and Natural advantages such as building a two-dimensional luminescent matrix. In several application scenarios where vertical cavity surface emitting lasers have great potential, such as sensing applications such as atomic clocks and magnetometers, or high-speed data transmission applications in data centers, etc., the light source usually requires the ability to work at high temperatures. [0003] In the existing related product...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a vertical cavity surface emitting laser and its control method and control device to solve the problem that the vertical cavity surface emitting laser in the prior art can maintain a high output operating temperature range is too small, and the output exceeds the preset range The problem of rapid drop in optical power

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