US 11,894,656 B2
Configurable high-frequency pulsed laser diode 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 Mar. 3, 2022, as Appl. No. 17/653,349.
Prior Publication US 2023/0283045 A1, Sep. 7, 2023
Int. Cl. H01S 5/042 (2006.01); H03K 17/687 (2006.01); H03K 19/20 (2006.01)
CPC H01S 5/0428 (2013.01) [H03K 17/6871 (2013.01); H03K 19/20 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A pulsed laser diode driver comprising:
a refresh circuit configured to receive a DC input voltage and to generate a refresh current using the DC input voltage, wherein a current amplitude of the refresh current is controlled by the refresh circuit based on a voltage level of a source voltage received by the refresh circuit;
a first source capacitor having i) a first terminal directly electrically connected to the refresh circuit to receive the refresh current and to develop the source voltage therefrom, and ii) a second terminal electrically coupled to ground;
a first inductor having a first terminal that is directly electrically connected to the first terminal of the first source capacitor; and
one or more switches configured to control a current flow through the first inductor to produce a high-current pulse through a first laser diode, the high-current pulse corresponding to a peak current of a resonant waveform developed at an anode of the first laser diode.