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The XBOX 360 HD-DVD high power laser thread

daguin

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Eagle 1 said:
[quote author=mauswiesel link=1209940381/500#504 date=1218662175]blue ray at 125 ma, red 350 ma (Senkat)

mauswiesel, my 803T's beam @ 200ma is no where near that visible.  What is your secret?[/quote]


Different cameras AND different people "see" the 405nm wavelength differently.

Peace,
dave
 



Eagle_1

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daguin said:
[quote author=Eagle 1 link=1209940381/500#512 date=1219928704][quote author=mauswiesel link=1209940381/500#504 date=1218662175]blue ray at 125 ma, red 350 ma (Senkat)

mauswiesel, my 803T's beam @ 200ma is no where near that visible.  What is your secret?[/quote]


Different cameras AND different people "see" the 405nm wavelength differently.

Peace,
dave[/quote]

For sure, dave - wondering if it there was smoke in the sky, or high humidity or something.
 

mauswiesel

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nope, there is only one secret : the time exposure : the photo above was shot with a 13 sec time, during night (the color of house is weird, i can confirm that it was full night when i take these photo : the time exposure gave me a bright photo + nice beam shot

;)
 

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flogged

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I've put over 100 hours of use on my 803t "brick" laser.. this is at 100mA.
http://www.laserpointerforums.com/forums/YaBB.pl?num=1209940381/348

The diode appears quite stable at this power level. With the Meredith heat sink, Plus some 'additions' I've thermal glued to it (see image) this setup runs cool enough for me to leave on indefinitely. The casing gets about body temperature warm. I've left it on overnight on several occasions (10+ hours). I'm getting over 15 hours of use from the batteries before the power begins to fade. This is using 6AA + 'DDL' circuit. On my seventh battery change currently.

Those looking for a more conservative power level might try 100mA. My diode smokes at this power level - at least 80-100mW I'd guess. It obliterates balloons out to over 20 feet, and will light wooden safety matches (unsharpied!) within a meter.



Here are few videos of the brick, now at 100mA (likely between 80-100mW output)..

Lighting a wooden safety match
http://www.youtube.com/watch?v=6qdePtha0kg

Popping a balloon:
http://www.youtube.com/watch?v=TuhtS9Dalzc
 

Nyla

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I just ordered 2 of the 803Ts in aixiz housings from drew, but I don't really know much yet so i'm looking for a circuit for a driver. I'm ok with soldering electronics and I have some basic components already. What schematics does everyone use?
 

john_lawson

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I think we need a new graph and power rating on these 803 t's I know on the first page it only shows a bit over 100 ma a iv'e seen dave run these at 300 ma ;D
 

climbak

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Hey everyone, I haven't been on in a long time due to being super swamped at school and work, but I figured I should update you all on the long term test diode. After about 4.5 months it finally died. From the timer we had hooked up to the power output, it died in mid September and was started on May 5th. The current was initially 100mA and after a month was bumped to 110mA, followed by 120 and 130mA shortly thereafter. The diode ran at 130mA for about half of the test. The only heatsink present was the little piece of metal it was housed in when installed on the sled.
 

styropyro

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4000 hours at over twice of what it was rated for is pretty good! (assuming the theory these are rated for 60mW) Most LDs are usually rated for around 5000-10000 hours so this is a good thing to hear. Plus, this laser diode didn't even have proper heat sinking.
 

flogged

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The diode (803) in my pointer died yesterday :(

50-60 hours of use, using 100mA. Its death may have been due to static.

So today I ripped apart another toshiba drive and extracted another 803 diode. I'm running this one @ 80mA. Should get over 15-20 hours of battery use using 6AA. Im using the 'ddl' circuit and a fixed resistor design.

i'm planning on metering the diode current use when I change batteries next. I think the internal resistance of these diode changes with age and temperature. when the first diode died it became a litter dimmer than my ~20mW 811 pointer, and its resistance dropped (after death diode was consuming 150mA, compared to 100mA before death).

At 80mA new diode will still light unsharpied wooden 'safety' matches, tho it takes a few seconds.

First light, new 803 diode @ 80mA.



Burning it in now...
 




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