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Old 06-23-2013, 08:47 PM #1
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Default Need a protective glass for diode that does not decrease intensity.

Is there a type of glass out there (say quartz maybe) that is strong, can withstand temperatures above 1000 degrees Fahrenheit and can allow a 445nm 1.4W blue laser to pass through it unaffected?


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Old 06-23-2013, 09:49 PM #2
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Default Re: Need a protective glass for diode that does not decrease intensity.

Would it be too much to ask for a reason you need it for?

Sounds like a very odd request.

If I had to guess, I'd say you need to ignite something in a contained with a laser. You don't need to worry too much about optical properties of the container, in that case. As long as you can see reasonably well through it, laser will ignite stuff through it as well.
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Old 06-23-2013, 10:08 PM #3
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Default Re: Need a protective glass for diode that does not decrease intensity.

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Originally Posted by LP2 View Post
I don't think any diode can operate or even withstand 1000F...
I think you misunderstood, only the glass needs to withstand that, not the diode.

Laser is outside this container made of high durability glass, if I understand the poster correctly. He's very vague...

It would be better if we can understand what you need to do.
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Old 06-23-2013, 10:47 PM #4
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Default Re: Need a protective glass for diode that does not decrease intensity.

Hahahah yea I need it to ignite something in a sealed chamber through the glass. The glass must let the laser pass through and must be able to withstand 5000F in temp actually not 1000. The laser is not in the chamber.
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Old 06-23-2013, 10:58 PM #5
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Default Re: Need a protective glass for diode that does not decrease intensity.

As long as it's transparent and not fogged or frosted with anything. And preferably not engraved or decorated But I'd assume it's not so you should be good.
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Old 06-24-2013, 03:02 AM #6
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Default Re: Need a protective glass for diode that does not decrease intensity.

This is ridiculous. Your problem isn't that you need a heat-proof window, your problem is that you need to ignite something in a chamber. A laser is one of the worst ways I can think of to accomplish that. Get a neon sign transformer and run some electrodes in there. The arc will set fire to whatever you want. You'll spend <$50 and it will be a hell of a lot more effective and reliable than a pointer. It can also be activated remotely. What are you blowing up, anyway? And why?
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Old 06-24-2013, 03:16 AM #7
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Default Re: Need a protective glass for diode that does not decrease intensity.

I can't say much its proprietary lol Creating an arc would require a lot of voltage which my team and I don't have the luxury of as we won't have access to it after testing. Sorry I wish I could go into further detail, I realize that makes getting help harder for me.
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Old 06-24-2013, 04:52 AM #8
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Default Re: Need a protective glass for diode that does not decrease intensity.

Hmm... Team, no access to voltage but access to high powered laser?

"Proprietary lol"?

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Old 06-24-2013, 05:16 AM #9
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Default Re: Need a protective glass for diode that does not decrease intensity.

Quote:
Originally Posted by cory58610 View Post
Creating an arc would require a lot of voltage
If you don't know what a transformer does, this project is too dangerous for you.
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Old 06-24-2013, 05:36 AM #10
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Default Re: Need a protective glass for diode that does not decrease intensity.

Well I'm glad you can ascertain that from the "nothing" I told you. Don't worry I'm a mechanical engineer not an electrical engineer, that's why we work on a team. Thanks for the help
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Old 06-24-2013, 05:44 AM #11
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Default Re: Need a protective glass for diode that does not decrease intensity.

Basically we have decided on lasers for a specific reason suited to our purpose. If we could use a transformer I'm sure my team would have thought of that already. My question was about glass so if you can't answer it don't reply please.
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Old 06-24-2013, 06:04 AM #12
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Default Re: Need a protective glass for diode that does not decrease intensity.

Cyparagon is quite capable of responding as could you, being a mechanical engineer, with a google search. The question is you have posted five times in all wanting information that could possibly involve a dangerous class IV laser and you haven't even introduced yourself and you expect people to trust you right off the bat. Trust goes both ways.

I wish you and your "team" the best of luck



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Old 06-24-2013, 06:16 AM #13
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Default Re: Need a protective glass for diode that does not decrease intensity.

Quote:
Originally Posted by cory58610 View Post
Basically we have decided on lasers for a specific reason suited to our purpose.
And unless you tell us that purpose and let us actually help you, I will assume you're a group of adolescents blowing stuff up in a box.

Your original question and your responses thus far have illustrated your lack of understanding of basic physics. "Where can I get a 100% efficient window that we can put in five thousand degrees so we can light stuff on fire with a laser pointer?" is not a question that a capable engineering team would ask.
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Old 06-24-2013, 06:21 AM #14
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Default Re: Need a protective glass for diode that does not decrease intensity.

Why is trust an issue when I'm asking a simple question about glass? I would like to know if there is a high temperature resistant glass that can allow a laser to pass through it without attenuation. I came to a forum to get a quick and efficient answer if anybody knows, not to build a relationship of trust with complete strangers on the internet. I know tone does not translate well through the internet, but I am not angry, just surprised at the responses I'm getting so please don't respond with another lesson, just an answer if you have one please.
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Old 06-24-2013, 06:34 AM #15
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Default Re: Need a protective glass for diode that does not decrease intensity.

This is a community of laser enthusiasts. Members "contribute" to the community. You don't want to contribute you just want to take. Paying a consultant might be a better route. Trust is a minimum contribution in my opinion.



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Old 06-24-2013, 06:35 AM #16
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Default Re: Need a protective glass for diode that does not decrease intensity.

wow I didn't come here to have an adult (assuming you are one... hard to tell) insult my intelligence. I'm a 21 year old engineering student so I'm sure I have a lack of understanding of basic physics. And I don't recall asking for glass that is a "100% efficient window" so I'd appreciate it if you would stop attacking me with fallacious statements. Obviously we are experimenting and are not completely capable in this area which is why I am coming here for quick advice to purchase lasers and glass. We have what's called a Design Review later for safety concerns so I don't need an ignorant, insecure, internet forum troll who sits at his computer putting a young student down who is trying to aspire to create something amazing and inspiring. Now I'm assuming you don't know the answer to my question so I will have to go elsewhere. Thanks anyways guys and thanks eudaimonium for the friendly answer.
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