ABSTRACT
Semiconductor laser diodes are possibly the most fragile semiconductor devices in common usage today. Proper care in their handling and application is essential to prevent damage and failure of the device. Special conductive packaging exists and numerous handling guidelines are well documented to prevent damage due to electrostatic discharge (ESD) [1]. However, not much is written with regard to the circuitry involved in operating or driving a semiconductor laser in a manner that will provide maximum output stability while protecting the laser diode from the various adverse operating conditions that could, and usually do, result in component failure.
