High Speed Laser Diode Driver
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High Speed Laser Diode Driver
A pulsed laser is a system which will emit light in the form of optical pulses and that system has a driver circuit to deliver current pulse to laser diode to emit light. There are numerous methods to achieve laser pulsing, but the end result follows the same principles. A pulsed laser periodically emits pulses of energy in ultra-short time duration. These periodic pulses, or pulse train, can be seen in Figure1 where τ0 is a pulse period (repetition rate = 1 𝜏0 ). The duration, or pulse width (τL) for laser diodes can range from 10’s of nanoseconds (10−9seconds) to 10’s of picoseconds (10−12seconds). In this paper, it will be shown the design of the high speed laser diode driver and the theory of the operation and it characteristics.
