US 12,272,923 B2
Laser diode drive systems
Scott R. Durkee, New Haven, VT (US)
Assigned to Simmonds Precision Products, Inc., Vergennes, VT (US)
Filed by Simmonds Precision Products, Inc., Vergennes, VT (US)
Filed on Oct. 20, 2021, as Appl. No. 17/505,914.
Prior Publication US 2023/0119309 A1, Apr. 20, 2023
Int. Cl. H01S 5/024 (2006.01); H01S 5/042 (2006.01); H01S 5/068 (2006.01); H02H 3/08 (2006.01)
CPC H01S 5/02461 (2013.01) [H01S 5/042 (2013.01); H01S 5/06808 (2013.01); H02H 3/085 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A laser diode drive system configured to output a drive signal to control a voltage provided to a laser diode, comprising: a circuit sensor system configured to output a sensed signal indicative of a drive current of a laser diode; a temperature sensor configured to output a temperature signal indicative of a temperature of the laser diode or an ambient temperature of the laser diode; and a temperature compensation system configured to output a correction signal based on the temperature signal to compensate for a temperature dependent factor in the sensed signal;
further comprising a first sum block configured to sum the sensed signal and the correction signal to cancel the temperature dependent factor from the sensed signal, wherein the first sum block is configured to output a compensated signal;
wherein the sensed signal includes a standard temperature portion and a non-standard temperature induced portion at a non-standard temperature, wherein the correction signal is equal to or otherwise cancel the non-standard temperature induced portion in the sensed signal.