infared filters, orth restoring or not

[Draco]

I have 4 lower power crystalaser GCL series laser that have had the epoxy bond fail where the infrared filter is bonded with the last lens, i can remove the filter and clean the epoxy off but i was wondering if that poses a risk and i should reglue the filter back in?

[swamidog]

I have 4 lower power crystalaser GCL series laser that have had the epoxy bond fail where the infrared filter is bonded with the last lens, i can remove the filter and clean the epoxy off but i was wondering if that poses a risk and i should reglue the filter back in?

the 808/1064nm light that will leak without an IR filter is quite eye hazardous. you should absolutely re-glue the filter.

[Draco]

do i need any special type of glue or epoxy? I know some can yellow, i am thinking of using a technique that was used at a company i worked at buy putting the mixed epoxy under high vacuum to remove bubbles , might be over kill but i always love an excuse to fire up the vacuum pump. I will warn a friend of mine that does have one with out the filter, by chance do you know where i could get a ir filter at, the one my friend has i lost, i think it's just a few mm square

[142laser]

do i need any special type of glue or epoxy? I know some can yellow, i am thinking of using a technique that was used at a company i worked at buy putting the mixed epoxy under high vacuum to remove bubbles , might be over kill but i always love an excuse to fire up the vacuum pump. I will warn a friend of mine that does have one with out the filter, by chance do you know where i could get a ir filter at, the one my friend has i lost, i think it's just a few mm square

Try Mr. David Wu at Lasver; I bought several filters from them and they are good and inexpensive.

[Draco]

i am not having any luck with the term lasver, it seems to come up with an unrelated site? trade key? i hope i got the message off, i am trying a solvent to pull one filter loose with out busting it

[markmtts]

Probably Lasever - http://www.lasever.com/

[Draco]

thanks that link worked great, my next question, on my lasers the filter was glued to the output lens, does the replacement need the exact same method or could i mount it in a diffrent spot, i am having difficulty finding 5mm x5mm? i had gotten one off cleaned all nice and then lost the damn thing

[Draco]

the reason that just came to mind is on these crystalaser there is a tube or barrel that has the output coupler on the far end with the ir filter glued to it, the other end is just open with lots of clearance, if i could put the ir filter at the open end it could be larger and just glued in at the edges

[masterpj]

I recall the IR filter being at the far end of the DPSS modules to avoid any reflection within the module to be blocked and also stay in the module.
If you are looking for IR filters there are some sold cheap on ebay. http://rover.ebay.com/rover/0/e11050...AQ%3AUS%3A1123

Please make sure you have proper IR protective glasses.
I got mine from: http://www.dragonlasers.com/Laser-Safety-Glasses.html
LSG08. Their pictures are outdated their newer glasses look and are so much better and shroud your eyes properly.

Test the safety glasses by putting a camera behind an eyepiece on a mount/stand.. facing the module.. turn on the projector remotely with an extension cord having nobody in that other room and see if the camera picks anything up.. no light being transmitted on the video is not a definitive but a more guarantee the safety glasses are doing its job (as there are always fakes out there).

[Draco]

thanks for the info, thankfully i do have and wear glasses for IR I have a class 4 diode laser and always wear them when the cover is off the other lasers, they throw off IR all over with out the cover on, i do need a pair for 532nm. thanks for the links, the cost on the glasses from dragon lasers is awesome, looks like i know what my x-mass gift will be