Western digital technologies, inc. (20250007238). STEADY STATE LASER DIODE FINGERPRINT MEASUREMENT AND COMPENSATION
STEADY STATE LASER DIODE FINGERPRINT MEASUREMENT AND COMPENSATION
Organization Name
western digital technologies, inc.
Inventor(s)
Sukumar Rajauria of San Jose CA US
Erhard Schreck of San Jose CA US
STEADY STATE LASER DIODE FINGERPRINT MEASUREMENT AND COMPENSATION
This abstract first appeared for US patent application 20250007238 titled 'STEADY STATE LASER DIODE FINGERPRINT MEASUREMENT AND COMPENSATION
Original Abstract Submitted
a data storage device may include one or more disks, an actuator arm assembly comprising one or more magnetic recording heads, at least one laser diode, and one or more processing devices configured to: set the at least one laser diode to a first temperature; apply a first forward bias and supply a first current to the at least one laser diode such that it is in a lasing state; measure, for the at least one laser diode, a first output corresponding to the first temperature and current; set the at least one laser diode to a second temperature; measure, for the at least one laser diode, a second output corresponding to the second temperature and the first current; and determine an output profile for the at least one laser diode, based at least in part on the respective output at the first temperature and the second temperature.