What is the best way to detect/measure IR from a laser pointer?

[luvlasers]

After reading all these recent threads on laser pointers with and with out IR filters that give out significant amounts of IR, i'm keen to test my lasers.

What is the best way to measure/detect IR? Or a method that will allow a comparison of the IR of two different lasers?

 

[pseudonomen137]

Visual methods will work for comparison, though they can be misleading sometimes considering even filtered lasers are filtered to different degrees. You can see a little bit or IR viewing in the first vid at this link: http://www.lasercommunity.com/cheap-ebay-green-lasers-suck-t8140.html and the member RoadRunner on lasercommunity has posted extensive pictures and guides on that.

Other than that though, getting a good IR filter an a laser meter is much more accurate way, but expensive if you don't already have the equipment.

 

[Aseras]

2 ways I test are laser through filter and no filter for comparison and I use a IR prism that reflects IR light at 90 degrees but lets visible spectrum straight through ( cd burners have similar prisms/mirrors in them, you just have to make sure that the one you use is reflective in the the IR wavelength you have leaking, 808 or 1064.. for a pointer ). I know what it's rated loss is so I can measue what is redirected and use that as another comparison. the 2 numbers are usually very close.

 

[luvlasers]

Thanks! checked out this site http://www.felesmagus.com/pages/lasers-cheap.html which was really informative.

New wish were mentioned though as often been IR filterless Will have to take some photos with night shot mode of my dragonlaser and compare it to my new wish to see if the IR filter is missing.

My New wish is only 5-10mW so not sure what kind of result i'll get. Can understand a 200mW laser pointer is IR filterless but not a poor man's 5-10mW laser pointer.

 

[pseudonomen137]

Stephanie made this back when we were under the impression Spymode, NewWish, etc lasers were all in the same class of unfiltered garbage (I haven't seen her in months so I wouldn't count on the site being updated). I also did some IR viewing of the IR from a Spymode for LC here: http://s105.photobucket.com/albums/m218/lasers-ch/?action=view&current=ir1.flv
Since then we've got more info on the NewWishs and know they aren't completely filterless at least on the 20-100mW models.