Laser Module Temperature

highamperage · Feb 17, 2009

Hey everyone,
I am wondering what temperature a green laser module operates best at for optimum output?

I know the output drops when the laser gets cold, or when it heats up... any information on the best temp is appreciated!

Thanks!

daguin · Feb 17, 2009

Each module is different. As the components cool down and/or heat up, the alignment is effected. Some work better at higher temperatures. Some work better at lower temperatures.

Peace,
dave

rog8811 · Feb 17, 2009

Body temperature seems to do quite well, no idea of the optimum though....

Regards rog8811

highamperage · Feb 17, 2009

I see. So, I guess I would need to test the output power at different temperatures.

Any estimates/rule of thumbs on body temperature though?

rog8811 · Feb 17, 2009

36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F
....google is your friend

Geneticz · Feb 17, 2009

I find that when my laser starts directly from "rest", the beam is noticeably less powerful than after a few minutes in my hand.

So I guess my laser likes a slight bit more warmth than most

andrelcg · Feb 19, 2009

I keep all my lasers and Cree's leds in a termal chamber with temperatures around 37°C ± 1°C and low humidity(45% ± 10%). Ready to use!

691175002 · Feb 19, 2009

My o-like modules seem to like it really hot. Its driving me insane, whenever I put them in a heatsink their output power halves or worse but I don't want to run them with no cooling.

Hemlock_Mike · Feb 19, 2009

Like Dave said -- Body temperature. That works for most of my lasers.

So far my O-like modules are also happy at body temp too.

Mike

Laser Module Temperature

highamperage

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daguin

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rog8811

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highamperage

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rog8811

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Geneticz

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andrelcg

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691175002

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Hemlock_Mike

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