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Monolithic integration of gallium arsenide optoelectronic devices


Ury, Israel (1980) Monolithic integration of gallium arsenide optoelectronic devices. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/s4x6-kk53.


The optical properties of GaAs make it a very useful material for the fabrication of optical emitters and detectors. GaAs also possesses electronic properties which permit the fabrication of high speed electronic devices which are superior to conventional silicon devices. This thesis describes three examples of the monolithic integration of optical and electronic devices on semi-insulating GaAs substrates.

In the first example, an injection laser was integrated with a Gunn oscillator to yield a high frequency modulated optical source. In the second example, an injection laser was integrated with a metal semiconductor field effect transistor (MESFET). The transistor was used to modulate the current through the laser. In the third example, an integrated optical repeater was demonstrated which consisted of a MESFET optical detector, a current source, a transistor driver, and an injection laser all fabricated on a single chip. The repeater displayed an optical gain of 10 dB.

In order to facilitate the fabrication of more complex integrated optoelectronic circuits, a method was sought to form a laser cavity which did not occupy the entire width of a chip. The result was the demonstration of whispering gallery lasers which take the shape of quarter and half rings. The performance of the curved lasers was reduced from that of the straight lasers due to optical scattering at imperfections along the curve. A general theory is developed which describes mode conversion in perturbed dielectric resonators. This theory is applied to the case of the whispering gallery laser and its predictions are compared with experiment.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Applied Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Yariv, Amnon
Thesis Committee:
  • Unknown, Unknown
Defense Date:28 April 1980
Record Number:CaltechETD:etd-09282006-090324
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3812
Deposited By: Imported from ETD-db
Deposited On:06 Oct 2006
Last Modified:16 Apr 2021 22:22

Thesis Files

PDF (Ury_i_1980.pdf) - Final Version
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