US 12,266,905 B2
Pulsed resonant laser diode array driver
Joseph H. Colles, Bonsall, CA (US); Steven E. Rosenbaum, San Diego, CA (US); and Stuart B. Molin, Carlsbad, CA (US)
Assigned to Silanna Asia Pte Ltd, Singapore (SG)
Filed by Silanna Asia Pte Ltd, Singapore (SG)
Filed on May 7, 2024, as Appl. No. 18/656,830.
Application 18/656,830 is a continuation of application No. 18/167,164, filed on Feb. 10, 2023, granted, now 11,996,676.
Application 18/167,164 is a continuation of application No. 17/658,477, filed on Apr. 8, 2022, granted, now 11,600,967, issued on Mar. 7, 2023.
Claims priority of provisional application 63/201,087, filed on Apr. 12, 2021.
Prior Publication US 2024/0291235 A1, Aug. 29, 2024
Int. Cl. H01S 5/026 (2006.01); H01S 5/042 (2006.01); H01S 5/068 (2006.01); H01S 5/42 (2006.01)
CPC H01S 5/0428 (2013.01) [H01S 5/0261 (2013.01); H01S 5/06808 (2013.01); H01S 5/423 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pulsed laser diode array driver, comprising:
a bypass switch having a first node that is configured to be directly electrically connected to i) a single common node of a laser diode array, ii) a first node of a bypass capacitor, and iii) a first terminal of an inductor, wherein a second node of the bypass switch is configured to be directly electrically connected to ground; and
a first laser diode switch having a first node that is configured to be directly electrically connected to a first row of the laser diode array and a second node that is configured to be directly electrically connected to ground;
wherein:
the first row of the laser diode array comprises a first plurality of laser diodes;
a first node of each respective laser diode of the laser diode array is electrically connected in common to the single common node, and a second node of each respective laser diode of each row of the laser diode array is electrically connected in common to a respective row node of the laser diode array; and
the first laser diode switch and the bypass switch are configured to control a current flow through the inductor, developed using a source voltage received at a second terminal of the inductor, to produce a first high-current pulse through the first row of the laser diode array, the first high-current pulse corresponding to a peak current of a resonant waveform developed at the first row of the laser diode array.