PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please sub

[Alaskan]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Is this a deal?

Arcturus Autopix Laser with Collimator Lens Tube | eBay

http://www.ebay.com/itm/JDSU-Hene-Laser-Head-Mdl-1108-Mfg-Date-December-2012-/261697249722

I thought someone here might want one of these, prices seem good.

 

[Mattronium]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Is this a deal?

Arcturus Autopix Laser with Collimator Lens Tube | eBay

JDSU HeNe Laser Head MDL 1108 Mfg Date December 2012 | eBay

I thought someone here might want one of these, prices seem good.

I don't think the HeNe would be a very good deal for $50+$9 for shipping.
Specs from Sam's Laser FAQ: 0.5 mW, 1.35 kV, 4.0 mA (JDSU 1108)
I'm pretty curtain that you could get it cheaper from Sam Goldwasser or somewhere else.

 

[tttonyyy]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Had a quick poke through this thread and not found a reference to this - seller claims it is 1W which isn't outlandish (unlike the 100W thread, heh)

High Power Blue Laser Pointer Pen 445nm Lazer Beam Match Cigarette Burning 0.5mw | eBay

Seems a good deal for £40 but as with all things from Hong Kong, what they say it is and what it actually is rarely align. So has anyone actually bought one of these and checked it with a LPM?

 

[hakzaw1]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Had a quick poke through this thread and not found a reference to this - seller claims it is 1W which isn't outlandish (unlike the 100W thread, heh)

High Power Blue Laser Pointer Pen 445nm Lazer Beam Match Cigarette Burning 0.5mw | eBay

Seems a good deal for £40 but as with all things from Hong Kong, what they say it is and what it actually is rarely align. So has anyone actually bought one of these and checked it with a LPM?

I don't even need to look at it--bad deal- buy FIRST from a trusted forum vet that you can meet in person if possible-
So you may want to re-think NOT putting your location into your profile.

You may (&IMHO should) be asked for proof of age..

Next choice would be a reply from your WTB thread placed in the BS& section- some may only think about selling if someone asks--

Buying from another company always adds to the risks-
..also sending a laser WITH the battery across borders is just plain dumb.

It looks like you are UK- check out Odicforce-- good rep and has nice kits that are easy to do.

Also some members do great 'group buys' at the forum ands there are a few good places to buy from like Jetlasers and others...

hak:san:

 

[hakzaw1]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

wtw ??!!!

hak is DOUBLE POSTING!!!???

YEP
and this is 'borderline' spam TOO but bear w/ me plz

news (bad then good) from AixiZ Laser Houston Tx-
the new AixiZ G2 400-700nm lenses are sold out-!!
One local buyer got 100 of them at full price..&bwanted more!

SO if you are waiting on G2 lenses from AixiZ-expect a letter of apology and a free glass 3 element lens-soon..
used to be one of the favs and for many still is.. IIRC less power but better beam profile.

-but more G2s are coming soon and you can get this deal locked in if you do it soon.
AixiZ at Amazon this lens is ~$15 and $3 sumtin' to ship==
IF you place an order via me for 10 pcs WHEN the come in you will be shipped free to CONUS at $79.90-
Both Greedbay and POOPPal have really made us unhappy of late so IF you can offer to pay via ANY other way PLEASE DO - you can call Chuck and do CCard over the phone- weekdays 10 to 1PM (ONLY) 713 240 4929
Nobody has a better rep than Chuck.

this and the below offer ENDS Jan 15th midnight _Central time.



BUT WAIT--there is MORE!!


heads up QS Owners UPGRADE!!
　
http://www.pangolin.com/NEWSLETTER/
Beyond/FB3 w/ free akai apc40 and custom skin
(reg is $50)
reg. price $895
akai APC 40 reg. $299
QS OWNERS--get all $670 plus shipping-
reg price by the piece $1.245 so this is a 46% discount-
Shipping resumes after Xmas.
tHIS DOES NOT COME WITH DAC.


NOT A QS OWNER???
AixiZ has that on sale year round reg price is $595 plus ship
Through me (only) 498$ plus $10 to ship.

WANT TO JUST JUMP RIGHT IN WITH BEYOND??

good timing
reg price
Beyond and FB3 -$1,495
order Akai APC 40 $299.00
add custom skin $50
total$1,844
on sale til Jan 15--ONLY $1.265 +ship
save >31%
also Entec DMX USB PRO reg-$151 Holiday sale $125 plus ship

there may be addition discounts for larger orders PM with you needs--

merry and happy sez hak :=)
BUT
-dont drive car or laser when drunk


-
　

 

[ru124t]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Melles Griot Hene RED Laser Tube Head 05 LHP 131 128 LAB Laser CVI | eBay

Hi guys, just found this and thought it may be interesting to you.

 

[ultimatekaiser]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

calling dibs on this: CNI DPSS Laser MBL w Blue 457 NM 3 000 10 000 MW | eBay

 

[Alaskan]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

My eyes bugged out when I looked at that CNI labby, 4 to 10 watts? Then I looked at the photo's and saw that particular one is 4 watts, still a very interesting find. They also have a green DPSS @4 watts for sale, but the price isn't so low.

 

[ultimatekaiser]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

yeah its quite a beast. we used to have a yellow a while that was similar housing. it was 300mW IIRC. but i want this so bad i can taste it, but i have a feeling its going to rapidly jump out of price range. people are bidding on it like a beast.

 

[hakzaw1]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

why bid at all???
I win lots by NOT bidding--
(PM me if you want my 'secret')
awesome that this thread is now 112 pages long..

last search found >20 listings for gas lasers--so how does one weed out the dead ones??

Not easily -- Sam has something to share on this



Compare info from multiple sources if possible - the more agreement there is, the higher the probability that the information is correct.
Also see the section: Buyer Beware for Laser Purchases.

Buyer Beware for Laser Purchases
In perusing the various laser offerings from time-to-time at the eBay Auction Site as well as the on-line or print catalogs of various surplus outfits, it very often seems that given the model or size of the laser, the claimed power output ratings are considerably higher than what may be realistic while still achieving a reasonable system lifetime, or are not possible at all. The most common error (intentional or not) is to use the CDRH safety sticker value rather than the manufacturer's or measured power output in the description of the laser.

This is an upper bound - the actual capability can be anything lower! And, even if the seller states that they measured the actual output power, there's no guarantee that their laser power meter was calibrated within the last century or that they knew how to use it properly!


Here are some comments on laser power and other claims that you should be aware of before purchasing a used laser:
Helium-Neon (HeNe) lasers: The power discrepancy is particularly evident with HeNe lasers where the model number and/or dimensions are provided. The tendency seems to be - possibly due to lack of knowledge, possibly for other reasons - to use the CDRH safety sticker rating (which is an upper bound for the laser safety classification) rather than the actual measured or specified optical power. Sometimes they do say 'max' (possibly in the fine print).

This doesn't mean it is (or ever was) possible to run the laser at that power, and the actual output may be less than half of the maximum value listed (assuming the laser is functioning near its new product ratings). HeNe tubes are essentially constant optical output power devices - there is no way to get more power either with greater tube current (beam power actually goes down) or by using pulsed drive. For example, a HeNe laser with a CDRH Class IIIa 5 mW sticker may produce as little as 1 mW when new and even less after thousands of hours of use! A true 5 mW HeNe laser head will be at least 15 inches long and have a Class IIIb safety sticker.

A classic defense of using the 'max' rating is to say that "the laser was spec'd as (say) 5 mW and thus calibrated at the factory for this power level but could go much higher".

Balderdash!

The only way to trim power of an HeNe laser (without an external attenuator) is to (1) run it with reverse polarity to sputter overcoat the anode-end mirror (which is irreversible) or (2) to slightly misalign one or both mirrors (which would compromise beam quality and stability and isn't likely to be done on purpose). Having said that, it is true that slight misalignment of the mirrors is common (either from use, thermal cycling, shock, or less than perfect quality control at the factory) and boosting power by some (usually modest) amount may be possible, even likely, by tweaking the mirrors - just don't count on it - or on a huge increase. But, first see the sections starting with: Problems with Mirror Alignment because it is very easy to totally mess up the alignment (or even break the tube) and never see any coherent light from your buy of a lifetime HeNe laser forever-after!


Note that there are some multi-mode (non-TEM00) HeNe tubes with wider bores and a different mirror curvature that produce up to perhaps twice the power output for a given tube length. However, with multiple axial modes, these are not suitable for many applications like interferometry and holography. They are also not very common compared to single-mode TEM00 HeNe tubes.


Also, the power output of non-red HeNe lasers - green (543.5 nm), yellow (593.9 nm), and orange (611.8 nm) - will be only about 1/10th to 1/4th that of an equivalent red (632.8 nm) one.

Thus, a 20 inch green laser head is good for about 2 mW (compared to 8 to 15 mW for red) and a 10 inch head, perhaps only .2 mW (1 to 2 mW for red). As with normal red HeNe lasers, there is no way to boost power and the CDRH sticker rating is normally much greater than what is actually possible. However, the beam WILL look a lot brighter mW/mW compared to red due to the response curve of the eye, which can be misleading to sellers and buyers alike.

Note: Since the gain of these wavelengths is so low, they also have a shorter life and the chance of finding working surplus green or yellow HeNe lasers is much lower than for red. I would not recommend bidding on an eBay auction for one of these unless guaranteed to be working. The likelihood of the problem for an "unknown condition" green or yellow HeNe laser being just mirror alignment is small to none!


And, just because the male Alden connector of the laser head fits into the mating female socket of a randomly selected power supply doesn't mean they will work together! HeNe lasers of all sizes usually use the identical connectors! (Many people have been known to throw out perfectly good HeNe tubes and heads if they failed to start or operated erratically when in fact, power supply compatibility was the real problem!) On the other hand, don't assume compatibility just because the laser tube or head and power supply were supposed to work together - many of these same people have no idea what this means and make the assumption that because the laser worked once (if that), it would be fine forever. The life of the HeNe tube and/or power supply may be shortened and/or power output may suffer.


Large-frame HeNe lasers like the Siemens LGK-7676/L/S and functionally similar Spectra-Physics 107/907 which show up on eBay and from surplus dealers either untested or without measured output power are probably high mileage tubes which may run but will not meet new power specs. However, they are very well built, really nice to play with, and probably have a lot of life left. Just don't expect good as new performance from them. Around 50 percent of rated power is typical.

Finally, HeNe laser heads in like-new condition that show up as surplus or on eBay without end-caps (output aperture and Alden connectors) were probably manufacturing rejects pulled from the line before being completed since they didn't meet spec in any of a number of areas including: output power value, stability with warmup, mode cycling percentage, polarization ratio, or other aspects of beam quality. Thus, what you end up with may have undisclosed problems.

This is also likely true of bare HeNe tubes (often without any identifying labels) - especially 'other color' (than red) types in pristine condition but where the locking collars or mirror adjusters are loose and the seller suggests that "alignment is all that is needed to make them lase and then you will have gotten a great deal". Note that it is likely that some of these have found their way to resale via less than legitimate channels - especially if the serial numbers have been removed! Even if they do work or can be made to work, items like this have trouble written all over them. And, don't believe claims that tubes were "purchased new and used very little" if they don't have any labels. A tube sold as a tube (not part of a laser head) will almost certainly be labeled with model and serial numbers at the very least, usually with a sticker on the side. Similarly, a laser head should also have a similar label. It's the law in both cases. And, even the manufacturer can't tell specs by inspection!
Having said all this, a used or off-spec HeNe laser

may still be just fine for many purposes as long as you understand exactly what you are getting. For more information on HeNe laser sizes and power output, see the sections starting with: Internal Mirror HeNe Tubes up to 35 mW - Red and Other Colors. And some have very interesting and unusual behavior.

Argon and/or krypton (Ar/Kr) ion lasers: It is much more difficult to determine actual ratings of small air-cooled Ar/Kr ion lasers based on size alone because the output from the same size laser head can span a range of 100:1 or more depending on specific model, age, operating current, or condition. The advertisement may specify the output when running at a current level that would result in a tube life of only a few hours or one not even obtainable with a typical power supply.
Also see the section: Expected Output Power and Used Ion Lasers.


^^^^^^^^^^^^

this is also good to know.
............
(this bit is also worth reading Sam's has specs for almost every gas laser every made-
this helps match head to PS.- just because the alden plug fits does NOT mean that's the right one
Locating Laser Specifications
It is often difficult to determine the capabilities of a particular model laser in terms of wavelength and power output based on a single catalog listing or description alone. (For testing of an laser you have, see the chapter(s) for that specific laser type.)
Obviously, for a model that is still being sold, the manufacturer's literature or Web site will often provide enough info. User and service manuals may also be available as well as for older lasers that they still support. In addition, there may be many variations on a given model depending on the type of optics installed and possible tube replacement or upgrade.

Unfortunately, few manufacturers maintain detailed specifications or other information readily accessible (e.g., on-line) for older models. After all, why should they help you fix the laser that you've been happy with for the last 5 years for only $500 when they can sell you a shiny new and improved one for $20,000!
There are a variety of other places to look for specifications but their accuracy can vary based on the objectives of the provider (e.g., honesty, vested interests, optimism, technical knowledge).
Vintage Lasers and Accessories Brochures has scans of older catalogs, specifications sheets, and price lists, from several popular manufacturers (mostly HeNe lasers at present).
Companies that sell used or surplus laser equipment - If the model in question is in their catalog, the information you seek may be there. For example, Laser Resale, Inc has extensive listings for virtually all types of laser systems. Many others can be found in the sections: Mail Order - Lasers, Laser Parts, Optics, Accessories and Laser Sales and Service Companies.
Just keep in mind that these are items for sale so power output ratings must be taken with a sliver of optical glass (at least for lasers like ion and ruby/YAG where output power is adjustable).

 

[icecruncher]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

why bid at all???
I win lots by NOT bidding--
(PM me if you want my 'secret')
awesome that this thread is now 112 pages long..

last search found >20 listings for gas lasers--so how does one weed out the dead ones??

Not easily -- Sam has something to share on this

Very nice reminder - Having bought LOTS and LOTS of gas lasers myself, I appreciate you sharing this.

Many people don't realize its not always plug and play - often its plug and pay. (trying to get it working right if at all and the output is seldom as high as posted)

 

[hakzaw1]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

ANY time I read 'wire has been cut' I assume its a dead gasser--why else would someone cut off the Alden plug.
IF the seller sez 'untested' BUT is selling separately the proper PS (find that spec at SAM's) something is not right..Some sellers are laser ignorant-so they may not even know what they have --iirc Matt (arythna) got a yellow HeNe that was NOT listed as such. BUT he also got burned a number of times and get some ship damage too.
Sam's Classifieds is NOT the place to find super deals on good-working lasers-BUT he does promise it will work and he will fix free if ever needed in the future.. and you can count on very accurate descriptions.

every laser geek should someday meet Sam--
We may try to have him again at SELEM in Aug 2015= he has been there twice as our honored guest. if asked Sam will bring lasers FS to the event for cash buys.. I got a yellow HeNe from Sam & had him autograph it for me ==lol

 

[ultimatekaiser]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

yes....i very much want to meet him someday. He's a great man. This is all solid advice Hak, and it rightly is important to cover all your bases as much as possible. I actually almost requested he autograph one of my tubes, but problem is, it'll wear off eventually for me, as I'm a fanatic about keeping my tubes HeNe tubes clean.

 

[icecruncher]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

He autographed the inside of the housing on the SP-127 I bought from Mariomaster that Sam had tweaked.

yes....i very much want to meet him someday. He's a great man. This is all solid advice Hak, and it rightly is important to cover all your bases as much as possible. I actually almost requested he autograph one of my tubes, but problem is, it'll wear off eventually for me, as I'm a fanatic about keeping my tubes HeNe tubes clean.

 

[ultimatekaiser]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

He autographed the inside of the housing on the SP-127 I bought from Mariomaster that Sam had tweaked.

That sounds like a wonderful gift. congrats to you man...a great sig from a great man, on what I consider my favorite HeNe. I re-tweaked mine last night, the mirrors are finally settling back in, so I got it to peak at a whopping 49 mW! I'd love to show it at SELEM but i'm too afraid it'd break on the trip unless I took it with me personally by driving or some sorcery.

 

[Alaskan]

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please

Green laser diode, LED or ? @ 532nm? (edit: according to what I can find so far, this is a Vertical External Cavity Surface Emitting Laser, or extended cavity surface-emitting laser).

Novalux Laser PLR HPC Laser Diode Green | eBay

I don't know what this puts out, but reading this article, I am wondering if this is a 532nm laser module at more than a watt: High output RGB sources promise laser TV 'by 2007'

Edit, adding this too:

From Sam's Laser FAQ's: Vertical Extended Cavity Surface Emitting Laser (VECSEL)

This is very similar to the OPSL, above, but uses electrical pumping similar to a conventional edge-emitting laser diode or VCSEL. However, the extended cavity allows frequency doubling to be performed much like in the OPSL with an external OC mirror and intracavity non-linear crystal. These lasers are direct competition to the OPSL and not surprisingly, have been introduced with similar wavelengths and output powers. One company that was a leader in this area was Novalux
Two relevant patents (listed on a Novalux laser) are:

U.S. Patent #6,243,407: High Power Laser Device
U.S. Patent #6,404,797: Efficiany High Power Laser Device
But Novalux seems to have ceased production of these lasers as end-user products and are concentrating on OEM applications like light sources for large screen TVs and portable projectors. The Novalux Web site is gone. However, there is an overly fluffy Web site for NECSEL with information on the technology and applications. It's not clear how much of it is real though. But imagine buying replacement multi-watt RGB laser modules at consumer electronics prices or salvaging them from broken TVs! And other manufacturers are developing similar technology, so there will be competition.

There are lots of contacts on the ribbon, I'm wonder what it takes to get one of these playing? Sophisticated drivers?