Title :
Effect of sidewall reflector on current versus light output in a pnpn vertical-to-surface transmission electrophotonic device with a vertical cavity
Author :
Numai, Takahiro ; Kurihara, Kaori ; Ogura, Ichiro ; Kosaka, Hideo ; Sugimoto, Mitsunori ; Kasahara, Kenichi
Author_Institution :
NEC Corp., Ibaraki, Japan
fDate :
6/1/1993 12:00:00 AM
Abstract :
The authors experimentally study the effect of a sidewall reflector on current versus light-output characteristics in a pnpn vertical-to-surface-transmission electrophotonic device with a vertical cavity. The distributed Bragg reflectors that form the vertical cavity for laser oscillation and the sidewall reflector retain spontaneously emitted photons in the optical cavity, and only the photons that have the resonance wavelength of the vertical cavity are emitted. As a result, spontaneously emitted photons are absorbed and the carriers are regenerated; that is, the injected carriers are converted to light, and spontaneous emission is reconverted to carriers. As a result of photon recycling of spontaneous emission, threshold reduction is expected. Threshold reduction by at least a factor of 4 is obtained with a device that has the sidewall reflector
Keywords :
distributed Bragg reflector lasers; electro-optical devices; laser cavity resonators; semiconductor lasers; current; distributed Bragg reflectors; injected carriers; laser oscillation; light output; optical cavity; photon recycling; resonance wavelength; sidewall reflector; spontaneous emission; spontaneously emitted photons; threshold reduction; vertical cavity; vertical-to-surface transmission electrophotonic device; Distributed Bragg reflectors; Integrated circuit interconnections; Optical interconnections; Recycling; Resonance; Spontaneous emission; Stimulated emission; Surface emitting lasers; Threshold current; Vertical cavity surface emitting lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
