Tunable polarization wavelength vertical-cavity surface-emitting laser and preparation method thereof

Abstract

The invention provides a tunable polarization wavelength vertical-cavity surface-emitting laser and a preparation method thereof. A sub-wavelength grating with effective refractive index anisotropy is prepared by adopting a semiconductor micro-nano processing method, is etched in a resonant cavity of the tunable polarization wavelength vertical-cavity surface-emitting laser, and can be equivalentto an aniaxial negative crystal with a certain thickness; by using a form birefringence effect, a TE (transverse electric) and a TM (transverse magnetic) polarization modes respectively meet different F-P (fluorescence polarization) tool equations in the resonant cavity, and have separated resonance wavelengths; and the TE polarization mode wavelength is positioned in the center wavelength, the TE polarization mode needs lower threshold gain, is preferably excited, and the TM polarization mode is inhibited, thus the tunable polarization wavelength vertical-cavity surface-emitting laser has the function of stably outputting wavelength polarization in a process of continuously tuning the wavelength.

Description

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AI Technical Summary

Benefits of technology

The inventors developed a new type of device called horizontal cavity Surface Emission Lasers (HCSLs) which uses special materials for creation of opaque gratings or reflectors. These devices have unique properties such as high efficiency, stability over time, ability to tune their emission' characteristics based upon external factors like temperature changes without losing accuracy due to agitation caused by vibrations during use. Overall, these technical improvements make HCSLSs more efficient and reliable compared to existing technologies used today.

Problems solved by technology

This patented describes various techniques for creating small electrically controlled devices called Vertically Caveous Surface Emission Lasers or Micromachined Tunable Vertical Cavities (MZVCO), which use quantum mechanics principles to convert electric energy into radiation waves without losing its original form through changes made over time due to environmental factors like temperature variations. These technologies allow for precise wave lengths but they suffer from instability caused by imperfections in manufacturing processes. To address this issue, there exists a new technique called High Contrasonic Quadratic Mode VCWL (HSQVM) that allows for efficient polarizing outputs.

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