At&t Bell Laboratories

Bell Telephone Laboratories

Maurice A Chin

Young-Kai Chen

Arthur Mike Sergent

Jenn-Ming Kuo

Horst L Stormer

Ming-Chiang Wu

Venkatesh Narayanamurti

A GaAs-based self-aligned laser with emission wavelength in the approximate wavelength regime 0.87-1.1 .mu.m is disclosed. The laser is a strained layer QW laser and is readily manufacturable. Preferred embodiments of the inventive laser do not comprise Al-containing semiconductor alloy. Lasers according to the invention can for instance be used advantageously as 0.98 .mu.m pump sources for Er-doped fiber amplifiers.

Article comprising a strained layer quantum well laser

An acoustic superlattice of alternating layers of different acoustic impedance is disclosed as a filter for high frequency phonons. Applications discussed include spectrometers, acoustic imaging apparatus, and cavity resonators.

Devices incorporating phonon filters

Growing community of inventors

South Plainfield, NJ, United States of America

Maurice A Chin