Pulsed laser diode driver
US11245247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2021 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Mar 22, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06226
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pulsed laser diode driver includes an inductor having a first terminal configured to receive a source voltage. A source capacitor has a first terminal connected to the first terminal of the inductor to provide the source voltage. A bypass switch has a drain node connected to a second terminal of the inductor and to a first terminal of a bypass capacitor. A laser diode has an anode connected to the second terminal of the inductor and to the drain node of the bypass switch. A laser diode switch has a drain node connected to a cathode of the laser diode. The laser diode switch and the bypass switch control a current flow through the inductor to produce a high-current pulse through the laser diode, the high-current pulse corresponding to a peak current of a resonant waveform developed at the anode of the laser diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.