Change Has Come To Priceangels

[Tech_Junkie]

Yes John, we know what a drop shipper is. We just didnt know if your company was all drop shipped. If it was all dropped shipped, it would be imposable for you to test lasers, because the product never gets to you company. That is why people keep bring up drop shipper so many times.

Email Jerry (Lasersbee) I'm he will help you with your meter.

 

[borgqueenx]

John, you have a green laser of 200mw in your signature...but when i click that link and see the photo on that page....i say its 10mw or so.
can you please explain?

And please purchase a laser power meter, if you want to be a good shop for these forums to purchase lasers...

 

[Braddubya]

John, you have a green laser of 200mw in your signature...but when i click that link and see the photo on that page....i say its 10mw or so.
can you please explain?

And please purchase a laser power meter, if you want to be a good shop for these forums to purchase lasers...

have you read any of the posts in this thread?

 

[borgqueenx]

have you read any of the posts in this thread?

no i have not...to lazy
will do now..

ah, awesome. this will be a very nice laser shop


and if i can make a reccomendation:
Test the lasers for about a minute each...yes this will take longer but this way you are sure its not fast-breaking stuff you sell or needs cooling to fast.

 

[FrothyChimp]

Albeit we do a bit more because we do some custom stuff but we use the following equipment in our lab: We use Ophir lab power meters with various detectors and Spiricon beam profilers. Our spectrum analyzer is by Ocean Optics. We also have oscilloscopes we use for beam noise measurements and other measurements.

Basically if it lases it always finds its way onto the Ophir for both start up measurement and stability measurements. If you want your customers to be confident in your products you have to provide measurement data for each laser. Our product manual is generally 18 pages with about half the pages being measurement and testing data. That kind of manual would be over kill for pointers but you need something that demonstrates how the laser responds in operation.

 

[Hemlock_Mike]

John7788 --

Frothy Chimp is describing to you a more commercial / industrial set of requirements which don't always apply to our hobby -- But it all helps confirm aspects of your product. We hobbiests usually can not afford what FC and his company sells :-(

That aside, you now have a LPM !!!!! Ride your suppliers to meet their specs..

HMike

And read my PM !

 

[lasersbee]

BTW, do you know how to connect lasersbee LPM to computer? My workers has some trouble in its usage. They told me the drive can not be set to PC, then what's the matter? I'm on vacation now, can't do it myself.

Gee... I wonder who you should PM or E-Mail to get info on
your LaserBee I....

We have not received any communications from you concerning
your new LaserBee I...

If you have ANY problems with your new LPM... contact the
manufacturer...:beer:


Jerry

 

[Addonex]

Subscribing to this thread, good job to you John.

 

[Hemlock_Mike]

John7788 -----

I'm glad to see you getting an LPM. As with any meter system, You need to understand how and why it works so you know what it is telling you.
Example:
You shine a 200 mW laser into your meter and it reads 200 mW - great.
Now you put in a IR filter window and the power drops to 90 mW. That means you have 110 mW of IR - Right? Wrong............
The filter may reflect 50% of the 532 and absorb some power in the filter.
The filter needs to be calibrated to your meters.
In the above case, there is "approximately" 190 mW of 532 and only 10 mW of unfocused IR.
The stray losses must be accounted for or the SIMPLE math can mislead the dolts.

HMike

On mine, I metered the reflected power and add it to the power going through the filter. This gives me a good hobby approximation of IR calculation.

 

[HIMNL9]

Hemlock_Mike is right, just one quick addon to his advice .....

If you don't have a calibrated, AR-coated anti-IR filter, or don't have a way for get one of them, you can easily check it yourself, getting 2 of these "normal" non AR-coated anti-IR filters that are available around .....

Put the first one on a green laser pointer, and read the power in this condition ..... suppose you read 100mW ..... now, place the second filter in the beam path, and take a second reading ..... supposed the second reading now is 80mW, then now you know that the filters take away 20% of the green, other than the IR, so, if now you use a single IR filter, you know that you need to add 20% to the power that you read, for have a correct reading.

A bit empiric, but it work ..... i discovered in this way that my non AR-coated filters takes off the 10% of the green, from absorption and, mainly, reflection .....

 

[John7788]

John7788 -----

The stray losses must be accounted for or the SIMPLE math can mislead the dolts.

HMike

On mine, I metered the reflected power and add it to the power going through the filter. This gives me a good hobby approximation of IR calculation.

Hemlock_Mike is right, just one quick addon to his advice .....

If you don't have a calibrated, AR-coated anti-IR filter, or don't have a way for get one of them, you can easily check it yourself, getting 2 of these "normal" non AR-coated anti-IR filters that are available around .....

Put the first one on a green laser pointer, and read the power in this condition ..... suppose you read 100mW ..... now, place the second filter in the beam path, and take a second reading ..... supposed the second reading now is 80mW, then now you know that the filters take away 20% of the green, other than the IR, so, if now you use a single IR filter, you know that you need to add 20% to the power that you read, for have a correct reading.

A bit empiric, but it work ..... i discovered in this way that my non AR-coated filters takes off the 10% of the green, from absorption and, mainly, reflection .....

yes, I remember HIMNL9 have told me a way to test the real output, using 2 IR filter.
BUt now the proplem is that we can hardly get one IR in china.

Mick, the 500mw one is 169 mw without IR.

 

[HIMNL9]

Just as idea ..... these filters can be found occasionally also on ebay, or also in photography shops (for photography, they call them usually ir / uv cutoff filter).

Some of them looks like glass with a colored reflection on the surface, usually very light blue, and work for interference / reflection ..... some others looks like lightly-green tinted glass, and these ones works for absorption .....

Probably the more easy way for found them at "human" prices, if not ebay, is in photography shops ..... just ask for a filter that block totally IR ..... or on ebay, for "uv ir filter" ..... also cheap ones are ok, for the use with an LPM, cause is not required a photographic quality .....

 

[mhakali]

yes, I remember HIMNL9 have told me a way to test the real output, using 2 IR filter.
BUt now the proplem is that we can hardly get one IR in china.

Hey John.

You should quite easily be able to get an AR coated IR filter in China.

Few sites I found along the way:

IR cut-off filter (IRC20 seems nice!)

IR-Cut Off Filters UQG Optics from Stock, Order Online

On alibaba I found atleast two sellers providing what you need aswell:

Optical IR Filter products, buy Optical IR Filter products from alibaba.com

http://www.alibaba.com/product-gs/250860043/IR_Cut_Filter.html

If not, you can buy the (rather expensive) at eBay: Optical Filter, KG1 IR Blocking Filter,16.6mm dia. w/AR - eBay (item 310179067737 end time Oct-28-10 11:46:16 PDT)

Optotronics used to have them at $1 per piece. I purchased 3 of them while back at $3 / ea incl shipping with very good results.

Best of luck, John!

 

[kiyoukan]

might you be able to get a 532nm 200mw green laser module?
Its the laser component inside the pointers.
I was wondering if you might have any that read 180mw and above on average. if you can do this please pm me i would be up for buying a good amount.

 

[John7788]

Hey John.

You should quite easily be able to get an AR coated IR filter in China.

Few sites I found along the way:

Best of luck, John!

then what makes a good IR filter? I notice the price varies much.
Will one or two IR filter be enough for all my lasers? A IR filter for yellow will fit for green, red,or violet laser?

might you be able to get a 532nm 200mw green laser module?
Its the laser component inside the pointers.
I was wondering if you might have any that read 180mw and above on average. if you can do this please pm me i would be up for buying a good amount.

Please wait for a day or 2, there will be a thread of the real output. As far as I know, I have some lasers near 180mw, and they are cheap.

thanks

 

[Eudaimonium]

then what makes a good IR filter? I notice the price varies much.
Will one or two IR filter be enough for all my lasers? A IR filter for yellow will fit for green, red,or violet laser?

Only green needs IR filter because of the way 532nm green light is generated.

Red and violet are direct diode lasers and have no IR emission at all.

Blue lasers, if you have them, need first to know what wavelenght they are. If 473nm blue, that's DPSS, and can tell them apart for very high prices for only a few miliwatts. They need IR filter for proper measurement of power.

I do not think there will be 445nm blue lasers commercially available on budget sites, but in case there are, you do not need IR filter for those.