CIRCUIT ARRANGEMENT FOR OPERATING LASER DIODE

摘要

A circuit arrangement for operating a laser diode in clocked mode includes a monitor photodiode, from the signal of which a measure of the radiation emitted by the laser diode is obtained as voltage to be measured, and a comparator, which compares the voltage to be measured with a reference voltage and provides the difference signal to a controller, wherein both the voltage to be measured and the reference voltage are applied continuously to the comparator. In order to carry out operation of the laser diode in clocked mode, a clocked-mode operation of the energy supply of the comparator is provided.

主权项

1. Circuit arrangement for operating a laser diode (10) in clocked mode, comprising a monitor photodiode (26), from the signal of which a measure of the radiation (12) emitted by the laser diode (10) is obtained as voltage to be measured (24), and comprising a comparator (22) which compares the voltage to be measured (24) with a reference voltage (32) and provides it as a difference signal (20) to a controller (14), wherein both the voltage to be measured (24) and the reference voltage (32) are applied continuously to the comparator (22), wherein in order to carry out operation of the laser diode (10) in clocked mode, a clocked-mode operation of the energy supply of the comparator (22) is provided.