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Old 09-25-2010, 07:30 PM #1
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Default Are there any single mode 445s out there?

I'm just wondering. I know they'd probably be expensive as all get-out with the lack of a consumer product to harvest them from. If they exist, what sort of powers might one expect?


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Old 09-25-2010, 10:11 PM #2
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Default Re: Are there any single mode 445s out there?

I would suspect the closest thing your looking for is 473nm Modules, which are pretty expensive and are available in powers no greater than 200mW I believe.
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Old 09-26-2010, 05:42 AM #3
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Default Re: Are there any single mode 445s out there?

There's a guy named kingston meo selling some diodes that are probably single-mode on here. He had a listing for them on ebay as well. Lower power of course, but they were something like <$100 maybe?
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Old 09-26-2010, 05:47 AM #4
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Default Re: Are there any single mode 445s out there?

They're ~$100-200 on eBay I believe, they're listed as 'SINGLE NODE', which made me chuckle a tiny bit. They're max 50mW and not truly single mode, but they're definitely better than nothing or buying a 473 setup. And you can get 473 in powers greater than 200mW.
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Old 09-26-2010, 01:31 PM #5
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Default Re: Are there any single mode 445s out there?

Quote:
Originally Posted by Spartan X View Post
I would suspect the closest thing your looking for is 473nm Modules, which are pretty expensive and are available in powers no greater than 200mW I believe.
You can get them up to 1.5W if you have the cash
http://www.cnilaser.com/PDF/MBL-N-473.pdf
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Old 09-26-2010, 01:57 PM #6
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Default Re: Are there any single mode 445s out there?

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You can get them up to 1.5W if you have the cash
http://www.cnilaser.com/PDF/MBL-N-473.pdf
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Old 09-26-2010, 03:11 PM #7
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Default Re: Are there any single mode 445s out there?

I think the only TEM00 modes I've heard of are from expensive fiber-coupled 445nm lasers. They only go up to about 45mW however.
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Old 09-27-2010, 08:22 PM #8
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Default Re: Are there any single mode 445s out there?

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I think the only TEM00 modes I've heard of are from expensive fiber-coupled 445nm lasers. They only go up to about 45mW however.
The Nichia single mode blues are still in the low four figures, price wise. They re not going to go much below the price of a air cooled 488 argon in bulk sales, which is about 3000$. If a huge demand came around, they would drop in price. They are mainly going into bio analysis gear, so not a huge demand.

A skilled holography person got single mode from the high power Nichias at low power and with a external grating for feedback tuning. ie ECDL operation.

Mode Stability of Diode Lasers

He has more promising, more recent, data elsewhere.

Steve
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Old 09-30-2010, 01:42 AM #9
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Default Re: Are there any single mode 445s out there?

This dood is showing low threshold single stability of blue...

Diode tests for ECDL operation
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Old 09-30-2010, 01:46 AM #10
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Default Re: Are there any single mode 445s out there?

that's some nice data there.. impressive! His whole little site is pretty amazing.
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