1. A Sub-ns Integrated CMOS Laser Driver With Configurable Laser Pulses for Time-of-Flight Applications
- Author
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Eugeni Isern, Guillermo Blasco, Ralf Burkard, Dominik Dorich, Elena Martin, and Hartmut Reh
- Subjects
Materials science ,Laser diode ,business.industry ,020208 electrical & electronic engineering ,010401 analytical chemistry ,02 engineering and technology ,Laser ,01 natural sciences ,0104 chemical sciences ,law.invention ,Semiconductor laser theory ,Generator (circuit theory) ,Phase-locked loop ,Time of flight ,CMOS ,law ,0202 electrical engineering, electronic engineering, information engineering ,Optoelectronics ,Electrical and Electronic Engineering ,business ,Instrumentation ,Voltage - Abstract
An integrated pulsed laser driver in a 0.18- $\mu \text{m}$ CMOS technology has been developed for generating configurable and stable laser diode pulses for time-of-flight applications. The duration of the output optical laser pulses can be configured from below 100 ps up to 5 ns, with 1-ps typical resolution, by a combination of a coarse and a fine delay generator. The pulse-width stability has been designed against process, supply voltage and temperature variations. This has been carried out using a system with two phase-locked loops that regulate the supply voltage of the chain of inverters, found in the driver and pre-driver improving by 2.5 times the stability compared to the case, where a fixed supply voltage is applied. Laser current can be configured up to 500 mA and output pulses are generated at a repetition rate up to 200 MHz.
- Published
- 2018
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