We all know that CW laser diodes are widely used in daily life. Many people have a misunderstanding that QCW laser diodes and CW laser diodes are not the same thing. Let's talk about it briefly in Xiaobian today.

What is CW (continuous output)

CW laser diode, that is, it always emits light stably, and the current is continuous.

The current is continuously input, the output power is also continuous, and the heat is continuously accumulated, which requires stronger heat dissipation, high stability requirements, and more demanding general application scenarios. It is used for equipment that requires stable waveform and constant brightness.

Its main characteristics are: stability, continuity and long life, but the single power cannot be particularly high.

What is QCW (Quasi-Continuous Pulse Output)?

QCW is actually a pulsed laser, but the pulse frequency can be made very high, which looks almost continuous, but the essence is "on and off".

Which is more durable?

Generally speaking: CW is more durable.

Because it has been working under the expected conditions. QCW life depends on how you set the pulse.

If the pulse current is too high and the duty cycle is too large, the service life will be obviously shortened.

The above is the difference between QCW laser diode and QCW laser diode. I hope you will have a clear understanding after reading it.