Core components of intelligent information world
*The ratio of indium (in) can determine the wavelength of laser emission
Be easy to make two-dimensional integrated devices
Be not affected by optical catastrophic damage, and its life is more than 107h
The fabrication and packaging process is compatible with LED
Application of LED production and packaging technology
Circular spot can emit single transverse mode beam, reduce the complexity and cost of beam coupling and beam shaping system, and has high coupling efficiency with optical fiber
The standard deviation of resonant wavelength of 4 inch epitaxial wafers is less than 2 nm, and the FWHM of edge emitting devices is 3 ~ 5 nm
The VCSEL cavity is short in length (wavelength order) and has large longitudinal mode spacing
A very small cavity size can obtain a larger relaxation oscillation frequency, and the modulation bandwidth is > 20GHz
The rate of change with temperature is 1 / 5 of edge emission
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