Fig. 2.

Performance comparison of laser diodes emitting nanosecond pulses. (a) Energy per pulse, optical pulse width, optical peak power and wavelength vs peak current. The data for the 445-nm and 450-nm diodes in the “Emitted Wavelength” graph overlap. (b) Optical peak power and wavelength vs repetition rate. The data for the 445-nm and 450-nm diodes in the “Emitted Wavelength” graph overlap. (c) Longevity test of three laser diodes (TB450B, HL63193MG-#1 and HL63193MG-#2), showing peak power and pulse width as a function of total working hours. The wavelength emitted at CW operation is plotted at Peak Current and Repetition Frequency ‘0’.