Shown in the video above is a 450nm 40mW single-mode laser. The laser power is adjustable from 0 to 40mW by turning the silver knob on the right side of the power supply. The spot mode is TEM00, and the spot is perfectly circular. The working voltage is AC 90~240V and supports wide range voltage. This laser supports two working modes of CW/Modulation. Its beam quality is excellent.
The test report of 450nm semiconductor laser.