The junction voltage of a near-infrared diode laser operating at a constant current can be used to monitor the oscillation frequency with an accuracy of ±600 MHz. This implies that signal averaging of spectra observed by repetitive temperature tuning of a diode laser can be performed by recording the spectra as a function of the junction voltage.
© 1987 Optical Society of America
Kiyoji Uehara, "Signal recording and averaging in diode-laser spectroscopy," Opt. Lett. 12, 81-83 (1987)