In the field of optical data storage, a laser driver drives a current through a laser diode to
cause it to emit light. When current is flowing to produce light, there is a Voltage drop across …

(57) ABSTRACT A method and apparatus for determining whether an inte grated circuit has
been subjected to stress conditions during operation. The integrated circuit comprises a test …

Abstract A light-emitting chip (3) has a lens-type coupling-out window (4), whose base area
(5) is provided with a mirror area (6). Arranged on a coupling-out area (7) of the coupling-out …

(57) ABSTRACT A band discontinuity reduction layer having a band gap energy larger than
that of that of an MQW (multiple quan tum well) absorption layer and smaller than that of a p …

Y-junction laser diodes are promising light sources needed for trace-gas sensing systems
based on tunable diode-laser absorption spectroscopy. The merit of this laser structure is the …

A system and method for manufacturing and wafer-level testing properties of a wafer
comprises a chuck receiving a wafer to be tested and a pump light source directing an …

FIG. 8 is a diagram showing a structure of a common Solid-State laser device according to a
related art. A direct current flows to a laser diode 1 to emit light, a laser medium 2 is excited …

The output characteristics of the ridge-waveguide AlGaInP/GaInP multiple quantum well
diode lasers have been investigated via ATLAS simulation tool. Three ridge-waveguide …

Embodiments of the present invention relate to methods and circuits for use with a system
including a light emitting ele ment (eg, a laser diode or light emitting diode) that is driven by …