Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Gas Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 04-29-2013, 08:08 AM #1
phenol's Avatar
Class 2M Laser
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
phenol phenol is offline
Class 2M Laser
phenol's Avatar
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
Default Aerotech hene

I recently acquired this He-Ne red laser. I cant tell the model number or manufacture date, but the warning sticker says 1.0mW max.
It is 220VAC powered self-contained laser with a beam shutter, TEM00 as far as i can tell.
Inside there are a step-up transformer and a voltage multiplier plus a HV NPN transistor for low side current regulation. Iop=4mA

It's a soft-seal tube with adjustable output coupler. There is some garbage around the getter, but it's still lasing at probably less than 1mw
Attached Thumbnails
Aerotech hene-outside.jpg   Aerotech hene-aerodot.jpg   Aerotech hene-gutted.jpg   Aerotech hene-crud.jpg  


phenol is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 04-29-2013, 08:39 AM #2
Sigurthr's Avatar
Class 3B Laser
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Sigurthr Sigurthr is offline
Class 3B Laser
Sigurthr's Avatar
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Default Re: Aerotech hene

That is quite an insteresting little laser! You don't see a lot of soft seal tubes these days.
__________________
Amateur Multispectral Photographer - [X-Ray, UV, Vis, IR]
Amateur Electrical Engineer
Autodidact
Tesla Coil Expert
Sigurthr is offline   Reply With Quote
Old 04-29-2013, 06:26 PM #3
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,142
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,142
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Aerotech hene

Quote:
Originally Posted by phenol View Post
HV NPN transistor for low side current regulation.
Any idea what it's rated for? I don't see HV NPNs too often at all.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 04-29-2013, 07:01 PM #4
phenol's Avatar
Class 2M Laser
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
phenol phenol is offline
Class 2M Laser
phenol's Avatar
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
Default Re: Aerotech hene

MJE2360T, VCEo=350V, not heatsinked.

The tube flickered when the interior of the laser warmed up. The doubler electrolytic caps have all gone bad. I replaced them and it now works fine. the driver is rather low tech, i was hoping for something that can power the 5mw tube i have, but at 1800v it just wont maintain a stable discharge...
I tried to 'activate' the getter by inserting the tube in an improvised induction heater. i have no idea if it helped or not, but the glass above the ring got very hot.

Last edited by phenol; 04-29-2013 at 07:11 PM.
phenol is offline   Reply With Quote
Old 04-29-2013, 07:58 PM #5
Sigurthr's Avatar
Class 3B Laser
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Sigurthr Sigurthr is offline
Class 3B Laser
Sigurthr's Avatar
 
Join Date: Dec 2011
Location: Michigan's U.P.
Posts: 4,382
Rep Power: 873
Sigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond reputeSigurthr has a reputation beyond repute
Default Re: Aerotech hene

From what I've seen of getters getting induction fired they typically have to glow red hot before they will activate.
__________________
Amateur Multispectral Photographer - [X-Ray, UV, Vis, IR]
Amateur Electrical Engineer
Autodidact
Tesla Coil Expert
Sigurthr is offline   Reply With Quote
Old 04-29-2013, 08:18 PM #6
phenol's Avatar
Class 2M Laser
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
phenol phenol is offline
Class 2M Laser
phenol's Avatar
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
Default Re: Aerotech hene

Quote:
Originally Posted by Sigurthr View Post
From what I've seen of getters getting induction fired they typically have to glow red hot before they will activate.
I'll try, but chances are that the mosfets will glow red hot before the getter...
phenol is offline   Reply With Quote
Old 04-29-2013, 08:45 PM #7
pschlosser's Avatar
Class 2M Laser
 
Join Date: Dec 2012
Location: Santa Rosa, CA
Posts: 909
Rep Power: 65
pschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond repute
pschlosser pschlosser is offline
Class 2M Laser
pschlosser's Avatar
 
Join Date: Dec 2012
Location: Santa Rosa, CA
Posts: 909
Rep Power: 65
pschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond reputepschlosser has a reputation beyond repute
Default Re: Aerotech hene

That power supply section and tube look much like the Spectra Physics 155 we see in so many classrooms.

Judging by the length of the tube, it is hard to imagine that tube is spec'd for more than 1mW. That .9 drawn on the tube may suggest its measured output at one time.

The getter does NOT need to glow red-hot in order to work. But at lower temperatures, it takes longer to do it's business. Rigging up a magnifying glass to focus the sun past the outer glass tube and on the getter itself has proven effective on numerous occasions. The idea is to attempt to heat up the getter, without heating up the glass tube (too much) by making sure the focal point is on the getter and not the glass tube. It may take several "applications" using this method to get contaminants out.

Consider running the tube straight through for a week or two, if you have problems starting it. Running it this long may increase the output power by 10-25% (estimated.) Since the tube is likely rated in the 10 of thousands of hours, you don't have much to lose by burning her in and trying to clean things up a bit.

If you have an LPM sensitive enough at these low powers, you can try adjusting the mirror at the output end to see of you can increase it's output with a little tuning. If you're squeamish about that, don't worry. Brand new, this tube may have put out 1.5mW.

And that power supply section could last for many years. Nice find. How much did you pay for it?
pschlosser is offline   Reply With Quote
Old 04-29-2013, 08:54 PM #8
phenol's Avatar
Class 2M Laser
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
phenol phenol is offline
Class 2M Laser
phenol's Avatar
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
Default Re: Aerotech hene

around the equivalent of $50-60, i got it in Bulgaria. the guy might have settled for a little less, but wat the heck...

it starts normally with the new caps, i'll keep it on for a couple of days...
phenol is offline   Reply With Quote
Old 04-29-2013, 10:00 PM #9
norbyx's Avatar
Class 3R Laser
 
Join Date: Apr 2013
Location: Costa Rica
Posts: 1,200
Rep Power: 59
norbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond repute
Send a message via Skype™ to norbyx
norbyx norbyx is offline
Class 3R Laser
norbyx's Avatar
 
Join Date: Apr 2013
Location: Costa Rica
Posts: 1,200
Rep Power: 59
norbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond reputenorbyx has a reputation beyond repute
Send a message via Skype™ to norbyx
Default Re: Aerotech hene

The first thing that I was reminded of when I first saw the picture of this laser was my 6th grade class, I remember a very similar looking laser was taken in the class for experimentation.
Anyhow you got yourself one very nice little laser.... congrats.
__________________
405nm 500mw--
Danefex minisabre 455nm 1.5W--

NLC Argon 458nm 30mW
Laser physics Argón 488nm 90mw

Ebay Pen Style 532nm 40-80mW
Rick Trent 638nm 1.2w--Blord 1 Watt 638nm EDC laser Shadow GF1 (review)--05-LHR-991 MELLES GRIOT HeNe 16mW--AEROTECH ELECTRO OPTICAL OEM5R 7mW

Laserbee II 3.2 LPM.
norbyx is offline   Reply With Quote
Old 04-30-2013, 05:51 AM #10
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,142
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,142
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Aerotech hene

Seems kinda strange they're only using a 350V transistor considering the voltage of the load and starting pulse... but I guess as long as you don't short the output too often.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 04-30-2013, 08:21 AM #11
phenol's Avatar
Class 2M Laser
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
phenol phenol is offline
Class 2M Laser
phenol's Avatar
 
Join Date: Oct 2007
Posts: 533
Rep Power: 50
phenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond reputephenol has a reputation beyond repute
Default Re: Aerotech hene

There is a 68k resistor across CE. The topology is the same as this one:
Sam's Laser FAQ - Complete HeNe Laser Power Supply Schematics
phenol is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 06:06 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC