Old 04-26-2015, 04:52 AM #1
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Old 04-26-2015, 04:58 AM #2
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Default Re: new to laser tech and have a unique question

With a widened ed beam power will drop off and I believe it's not linear as in 2x the size 1/2 the power. The only laser that could do something like that would be a c02 laser as you need more than a few watts to do what you're attempting. Trouble is regular glass blocks the Co2 WL 10,600nm. You'd have to aim it right over the open container. Also you need to know variables such as the liquids boiling point and such and such.
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Old 04-26-2015, 05:09 AM #3
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Post Re: new to laser tech and have a unique question

this was a small graphic for those who complained about no diagrams -

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Old 04-26-2015, 05:15 AM #4
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Default Re: new to laser tech and have a unique question

Man I can't help you much more here , but if a CO2 laser is needed I just want to let you know you they need special optics that look opaque to you.

I feel like an idoit though I forgot to ask you , what volume of liquid are we talking about , are you allowed to die it?

if it's a rather small amount you might be able to get away with a few watts of 445 provided you can die it orange.
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50mw 660nm DX pen
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Spartan 589nm 50mw likely higher no lpm to test but skin feels warm.
3.107 watt 445nm zero laser
473nm labby peak at 34 mw
808nm over a watt from a 400mw green that came loose and lost the crystal set
980nm with weak cyan line focousable
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Old 04-26-2015, 05:27 AM #5
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Default Re: new to laser tech and have a unique question

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Old 04-26-2015, 05:37 AM #6
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Default Re: new to laser tech and have a unique question

The highest you can get from 1 diode at 445nm with proper optics is 6 watts if you're lucky.

They are rated for 3.5 watts normally and have worse specs beam wise

All 445nms ~200mw (0.2watts) and up are muilmode diodes and so will not focus as well a single mode dioide.

The 7.3 in the video are 3 combined lasers into one beam.
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Chrome 12x 405nm pen @ 475mw by Ra_pierce
~30mw newish 532nm Pen
~100mw IQS 532nm Pen
50mw 660nm DX pen
"5mw" overspec IQS Blu-ray does around 50mw
Spartan 589nm 50mw likely higher no lpm to test but skin feels warm.
3.107 watt 445nm zero laser
473nm labby peak at 34 mw
808nm over a watt from a 400mw green that came loose and lost the crystal set
980nm with weak cyan line focousable

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Old 04-26-2015, 05:45 AM #7
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Default Re: new to laser tech and have a unique question

What is the material's thermal capacity? What color is it? Is it translucent? How much of it is there? Could you get us a picture?

I can tell you what kind of laser you need if you can answer all/most of these.
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Old 04-26-2015, 06:08 AM #8
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Arrow Re: new to laser tech and have a unique question

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Old 04-26-2015, 06:39 AM #9
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Default Re: new to laser tech and have a unique question

Well honestly if you want "instant" you're going to need a Q-Switched laser. Do you have any idea what the thermal capacity of the material is?
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Old 04-26-2015, 07:14 AM #10
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Arrow Re: new to laser tech and have a unique question

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Old 04-26-2015, 07:18 AM #11
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Default Re: new to laser tech and have a unique question

Not really possible to have it "instant" with those kinds of restrictions. If you can forgo the "instant" part then it might be possible, but I'd need a time frame in which the material will be heated.

also keep in mind different WLs interact differently with different materials, so do you need it heated evenly or can it just be heated in one spot?
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Old 04-26-2015, 07:24 AM #12
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Arrow Re: new to laser tech and have a unique question

it would need to reach its max temp within a couple of seconds so it does not have to be instant but pretty quick. This fluid will actually start to evaporate at 400+ and that is what the sensor picks up. As the fluid degrades it evaporates at a higher temp.

The fluid has the viscosity of glycerin, is room temperature and when the machine is running the fluid actually warms up to 80+ degrees.

I would say it would be best to uniformly heat a surface area of an 8mm diameter circle. a rather small area. the more surface area the better. there is a sensor tube of corts situated above.

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/////////| -() E { ] ==
laser lense ceramic fluid small chamber cap sensor + tube/cord

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Old 04-26-2015, 07:26 AM #13
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Default Re: new to laser tech and have a unique question

Okay, so do you need the laser to heat the ceramic, which then in turn heats the fluid, or do you need to heat the fluid directly?
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Old 04-26-2015, 07:36 AM #14
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Old 04-26-2015, 07:46 AM #15
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Default Re: new to laser tech and have a unique question

So it's just thermodynamics. Since I cannot actually see the setup you have it will just be easier if you do the calculations.

If you want it heated evenly it's going to be harder to do. You're going to want a visible WL and have it resonate inside the liquid, allowing it to heat evenly. This will of course up the time it takes to heat, and the complexity of the device. Due to the heat capacity of said liquid you're probably going to need a pretty high powered laser.

I'm not sure a laser is the best option here.
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Old 04-26-2015, 07:54 AM #16
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