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Old 08-26-2010, 01:19 AM   #17
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Default Re: 1mW Hand-Held HeNe

Another nice piece of laser history to own!

I remember the 1 mW HeNe kits from the day, that were about as large, but without space for internal batteries - they'd run off and external power supply.

How much current does it draw from those batteries? Despite the bulk of the thing, i doubt they'd last very long
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Old 08-26-2010, 01:47 AM   #18
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Default Re: 1mW Hand-Held HeNe

Dave you are the connoisseur of coherent light! Nice pointers and
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Old 08-26-2010, 02:25 AM   #19
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Default Re: 1mW Hand-Held HeNe

I want that very middle HeNe, its just so cool
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Old 09-11-2010, 07:35 PM   #20
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Default Re: 1mW Hand-Held HeNe

Many years ago I built up a laser "pointer" with a 5mw hene inside. It sat somewhere inbetween dave's 1mw 8aa battery unit, and the mains unit. This unit I made myself, had a PVC pipe with a press button, and had a 12v alarm battery for the power supply that you hung over your shoulder.

The tube was a Siemens tube in a metal bracket that was just the right size to slide into the tube, while keeping the laser beam centered. The power supply came from Oatleys electronics, and had a custom made transformer, and a cockroft walton multiplier made up of heaps of hv diodes and a pile of blue HV disc capacitors. Those caps would stay charged for a while and give you quite a zing if you werent careful. You of course were the labour, and had to put it together. The pcb was a nice slide fit into the tube as well. Foam rubber and double sided tape kept it in position but made for easy maintenance. The connection to the hene tube ends was facilitated by using PCB mount fuse clips with the solder tabs snipped off.

It was the coolest toy for a while until those nice red pointers came out that could hang off your keychain, pumped out 5mw, and ran on a few watch batteries.

Mind you my hene would outlast all of them, the little keychains would run for what 30 minutes? my hene's battery protector would shut off the laser at around 5 hours from full charge. (SLA batteries dont like being deep discharged, and the protector would turn off the load at 11v.)

Did I mention I built this thing at age 12? Showed my folks I was sensible around lasers, as saftey glasses werent easily come by. So at around 15 years of age, mum let me borrow the credit card (which I paid off over time) to buy the Oatley electronics NEC GLG3030 argon.
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Old 09-12-2010, 04:37 AM   #21
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Default Re: 1mW Hand-Held HeNe

Someone should open up a laser museum. Smoking Allowed!

Not that I smoke, but you want to see the beams. :-)
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Old 09-12-2010, 02:52 PM   #22
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Default Re: 1mW Hand-Held HeNe

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Originally Posted by ludwigfan View Post
Someone should open up a laser museum. Smoking Allowed!

Not that I smoke, but you want to see the beams. :-)
Too true!
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Old 09-14-2010, 04:07 PM   #23
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Default Re: 1mW Hand-Held HeNe

Yeah, and the smoke is good for all the sensitive optical equipment.
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Old 09-15-2010, 05:35 AM   #24
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Default Re: 1mW Hand-Held HeNe

Quote:
Originally Posted by vk2fro View Post
Many years ago I built up a laser "pointer" with a 5mw hene inside. It sat somewhere inbetween dave's 1mw 8aa battery unit, and the mains unit. This unit I made myself, had a PVC pipe with a press button, and had a 12v alarm battery for the power supply that you hung over your shoulder.

The tube was a Siemens tube in a metal bracket that was just the right size to slide into the tube, while keeping the laser beam centered. The power supply came from Oatleys electronics, and had a custom made transformer, and a cockroft walton multiplier made up of heaps of hv diodes and a pile of blue HV disc capacitors. Those caps would stay charged for a while and give you quite a zing if you werent careful. You of course were the labour, and had to put it together. The pcb was a nice slide fit into the tube as well. Foam rubber and double sided tape kept it in position but made for easy maintenance. The connection to the hene tube ends was facilitated by using PCB mount fuse clips with the solder tabs snipped off.

It was the coolest toy for a while until those nice red pointers came out that could hang off your keychain, pumped out 5mw, and ran on a few watch batteries.

Mind you my hene would outlast all of them, the little keychains would run for what 30 minutes? my hene's battery protector would shut off the laser at around 5 hours from full charge. (SLA batteries dont like being deep discharged, and the protector would turn off the load at 11v.)

Did I mention I built this thing at age 12? Showed my folks I was sensible around lasers, as saftey glasses werent easily come by. So at around 15 years of age, mum let me borrow the credit card (which I paid off over time) to buy the Oatley electronics NEC GLG3030 argon.
I built one into an electric squirt machine gun
I had this tiny flyback from a tv set that I bifilar wound a primary on it
I drove it with a bistable multivibrator with two to-220 2n3055's

2 nice diodes, 2 nice caps, a series resistor and it was lasing

I cant remember what model that tube was, it was real small!
This laser got robbed from me which I have posted about.

That MWK laser is a company that was or is still? in CA, they had lots of laser stuff, I bought an Omnichrome 150 and Lasermax card from them
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Old 09-15-2010, 05:37 AM   #25
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Default Re: 1mW Hand-Held HeNe

Quote:
Originally Posted by vk2fro View Post
Did I mention I built this thing at age 12? Showed my folks I was sensible around lasers, as saftey glasses werent easily come by. So at around 15 years of age, mum let me borrow the credit card (which I paid off over time) to buy the Oatley electronics NEC GLG3030 argon.
OH! I forgot to ask!
How long ago and who did you buy that 3030 from?
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Old 09-16-2010, 03:06 AM   #26
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Default Re: 1mW Hand-Held HeNe

I used to order stuff from MWK back in the day, I should see if I can find the catalog I had... they had a website @ laser tube diode lasers coherent at mwkindustries.com but it seems to have expired a while back...

you can see parts of the old site on the internet archive

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Old 09-19-2010, 04:54 AM   #27
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Default Re: 1mW Hand-Held HeNe

Ok I gotta ask. What is the benefit of these gas lasers, low power, Huge Large power consumption.

It is possibly a "Because I can" sort of thing?
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Old 09-19-2010, 05:22 AM   #28
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Default Re: 1mW Hand-Held HeNe

Nostalgia I guess. Like tube audio amplifiers vs. solid state.
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Old 09-19-2010, 05:24 AM   #29
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Default Re: 1mW Hand-Held HeNe

It's because they're cool.
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Old 09-19-2010, 05:24 AM   #30
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Default Re: 1mW Hand-Held HeNe

Quote:
Originally Posted by Toaster View Post
Ok I gotta ask. What is the benefit of these gas lasers, low power, Huge Large power consumption.

It is possibly a "Because I can" sort of thing?
It's like any laser owned by a hobbyist . . . .

If you've got to ask "What good are they?", you will not understand anyway

Stick around awhile and learn

Not everything in life has to have a "functional" purpose

Peace,
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Peace,
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Old 09-19-2010, 06:01 AM   #31
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Default Re: 1mW Hand-Held HeNe

Quote:
Originally Posted by daguin View Post
It's like any laser owned by a hobbyist . . . .

If you've got to ask "What good are they?", you will not understand anyway

Stick around awhile and learn

Not everything in life has to have a "functional" purpose

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Double Peace to you too Dave!
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Old 09-19-2010, 04:39 PM   #32
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