Optical F-P resonant cavity for frequency stabilization of semiconductor laser

Abstract

An optical F-P resonant cavity used for frequency stabilization of semiconductor lasers, the invention relates to an optical F-P resonant cavity. The invention aims to solve the problem that in the atomic / molecular spectrum frequency stabilization system used in semiconductor lasers, the atomic / molecular gas chamber is the core frequency reference device. The process of making a micro gas chamber is complex and difficult to manufacture, and this kind of gas chamber needs to be equipped with a heater and a temperature sensor when it is working. It is difficult to further reduce the volume of the optical path. If the laser frequency jumps, this frequency stabilization system It is difficult to pull the laser frequency back to the original center frequency. The optical F-P resonator consists of the first silicon dioxide substrate, the second silicon dioxide substrate, the third silicon dioxide substrate, the fourth silicon dioxide substrate, the fifth silicon dioxide substrate, the sixth and second It consists of a silicon oxide substrate and a seventh silicon dioxide substrate.

Description

technical field [0001] The invention relates to an optical F-P resonant cavity. Background technique [0002] Semiconductor lasers are widely used in optical communication, optical sensing and other fields because of their small size, low power consumption, large wavelength coverage, and easy tuning and modulation. The laser is affected by the surrounding environment and its own factors, such as the material properties inside the laser, cavity length, carrier concentration, gain, energy gap, refractive index, temperature, mechanical vibration and operating current, etc., which will cause the output frequency to be unstable. , and often changes over time. Therefore, it is of great significance to study the frequency stabilization of lasers. If its frequency stability problem can be improved, it will open up broader application prospects for semiconductor lasers. The spectral lines of atoms or molecules show relatively stable properties and are less affected by external fac...

AI Technical Summary

Problems solved by technology

However, under normal circumstances, the process complexity of making a micro air chamber is high, and it is difficult to manufacture, and this kind of air chamber needs to be equipped with a heater and a temperature sensor when it is working.

In order to avoid the influence of heat transfer, other optical components in the frequency stabilization optical path have to keep a certain distance from the gas chamber, so it is difficult to further reduce the volume of the optical path

In addition, if the laser frequency jumps, it is difficult for this frequency stabilization system to pull the laser frequency back to the original center frequency

For lasers with different wavelengths, it is necessary to make gas cells of different atoms / molecules. Such a frequency stabilization scheme is obviously not universal

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