Duty cycle Red (650nm) laser (LPC-815) 245mW @ 420mA

Hello, I have a laser as the title. Piloted by drivers Dr.lava.
I built a circuit with integrated NE555. to convert the TTL signal in pulsed.
I wonder if a cycle of 30 sec on and 1 second off, extending the life of the laser in continuous use for 30 min. Or should I set a course of 3 seconds on and off 0.5sec? Accepted tips, drivers can be programmed.
I use the laser to cut cardboard and wood, using cnc pantograph. then I need to keep the laser on for a long time (at least 30min). what cycle do you recommend? That does not lower the laser power to be cut.
Thx at all

what kind of cooling are you using ?

The exact timing doesnt matter much, as long as the duty cycle remains the same.

If it works for 3 seconds on and 0.5 seconds off, it would only require a minute improvement in cooling to be able to run it continously.

You can always compensate with better optics and
lower current to the LD..

A glass aspheric collimating lens will make a good amount
of difference.

The idea being the same output power with less stress..

hi, i use a big lab heatsink to cool it. 1.8"*1.8"*1.8" cube.
I just have a glass lens on it, as they say, power is never enough.
30 sec on and 1 off is inconclusive for the life of the laser used continuously for 30 minutes?
I know that used pulsed burning has less power, is not it?
thx at all

With a heatsink that size, i think it should be able to run CW easily.