Other

Triquint Technology Holding Co.

David V Lang

David Alan Ackerman

Henryk Temkin

John C Bean

John Evan Johnson

Roosevelt People

Thomas P Pearsall

C Lewis Reynolds, Jr

A method of increasing the monomolecular recombination and the immunity to noise of a continuously tunable laser is disclosed. A concentration of recombination centers in the range of about 1&#xd7;10cmto about 1&#xd7;10cmin the tuning region of the laser device is achieved by doping the waveguide layer with impurity atoms, by irradiating the waveguide layer with high energy particles or by varying the growth conditions of the waveguide layer to introduce native point defects due to lattice mismatch. This way, the monomolecular recombination is increased and the radiative recombination over low current ranges is reduced. By increasing the monomolecular recombination, the immunity to noise is improved but the tuning efficiency is reduced. Nevertheless, only a minimal effect on the tuning efficiency is noted over high current ranges and, therefore, the overall tuning range is only insignificantly changed.

Wavelength tunable laser and method of formation

A strained layer superlattice comprising Ge.sub.x Si.sub.1-x layers interleaved with Si layers is an excellent photodetector at infrared wavelengths due to the large shift in bandgap caused by the strain in the superlattice.

Device having strain induced region of altered bandgap

Growing community of inventors

Madison, NJ, United States of America

David V Lang