CPC H01S 5/0092 (2013.01) [H01S 5/0617 (2013.01); H01S 5/0653 (2013.01); H01S 5/06808 (2013.01); H01S 5/141 (2013.01); G02F 1/354 (2021.01); G02F 1/3507 (2021.01); G02F 1/3551 (2013.01)] | 21 Claims |
1. A method for determining a single-frequency operating current of a diode laser, comprising:
(a) ramping up an operational current of the diode laser for a first predetermined number of steps, and measuring an associated current value indicative of optical power within the laser diode for each of the first predetermined number of steps;
(b) ramping down the operational current of the diode laser for a second predetermined number of steps, and measuring an associated current value indicative of optical power within the laser diode for each of the second predetermined number of steps;
(c) using measured data obtained in operations (a) and (b) to identify current values at which a mode hop or a multimode operation is likely to occur; and
(d) determining a contiguous range of operating currents that is devoid of identified likely mode hops or multimode regions of operation as the operating current range of the diode laser having a single-frequency output, wherein the multimode operation is identified as a region having a negative slope followed by a region having substantially flat values for the current values indicative of the optical power as a function of the ramped up operating currents of the diode laser.
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