Red SLM diode HL6363 MG 30-40mW 640nM

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Joe Farina
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Joined: Wed Jan 07, 2015 2:10 pm

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by Joe Farina »

I tried to locate a free online pdf copy of this paper, and couldn't find one.

https://ui.adsabs.harvard.edu/abs/2000R ... A/abstract

What they seem to have done was to use the built-in photodiode of a laser diode (used for power monitoring) as a controlled heating element for the laser diode chip.

On page 3649 they say: "The thermal control we propose in this article utilizes as a heating element the semiconductor slice of the built-in photodiode which is used for laser optical output monitoring. The built-in monitor photodiode, commonly available in most commercial diode lasers, consists of a chip of rectangular shape deposited directly onto the iron mounting which supports the laser and is placed very near to the emitting source, as shown in Fig. 2 (a)."

So far I haven't located any actual numbers in the paper (in degrees C) to indicate how much heating was involved.
jrburns47
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Location: Oyster Bay, NY

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by jrburns47 »

https://www.researchgate.net/publicatio ... ode_lasers

Here’s a link to the full paper. Thanks!
142laser
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Location: Tampa, FL

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by 142laser »

Temperature control is the key, at or near ambient minimizes demands on the TEC and drive. I believe these are TEM 00 but not single longitudinal mode; data sheets can have that mistake. "Single Transverse Mode" TEM 00"
142laser
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Location: Tampa, FL

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by 142laser »

The 50 degrees C is probably the maximum temperature.
Valery
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Joined: Fri Jan 09, 2015 12:42 pm
Location: Yaroslavl , Russia

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by Valery »

Hi Dave.
Is it possible to buy with drivers?
How much ?
Valery.
Joe Farina
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Joined: Wed Jan 07, 2015 2:10 pm

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by Joe Farina »

After looking at some more datasheets, I think you're right that +50C refers to the maximum, and this seems to be typical of red laser diodes, as shown at:

https://www.thorlabs.com/newgrouppage9. ... group_id=7

For red diodes, the operating temperature of 0 - 50C is often given. So this diode seems usual in that respect. On the other hand, I think Dave mentioned that these particular diodes like to run warm, and this may be a useful observation.
holomaker
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Joined: Wed Jan 07, 2015 8:01 am

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by holomaker »

Valery please check your PM ..
holomaker
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Joined: Wed Jan 07, 2015 8:01 am

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by holomaker »

Ok finding that once it’s set In SLM, just leave it on ! With my simple driver and only passive cooling remains locked in . Turning it off/on again losses SLM and need a reset...
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Valery
Posts: 275
Joined: Fri Jan 09, 2015 12:42 pm
Location: Yaroslavl , Russia

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by Valery »

Hi Dave. Payment sent.
Valery.
John Klayer
Posts: 273
Joined: Thu Jan 08, 2015 2:28 am

Re: Red SLM diode HL6363 MG 30-40mW 640nM

Post by John Klayer »

Don't Bogart the driver.
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