I'm looking for new laser safety goggles for our lab, which has a high-power Ti:sapphire laser (750–850 nm). An optical density (OD) of 6 or higher is needed for adequate protection. Currently I like these the best: http://noirlaser.com/axx.html. They are OD 7+, but they only have 33% visible light transmission and it's a little bit difficult to get around the lab while wearing them. Any better suggestions?
Dear Daniel, I think the VLT of 33% is great.
I am using typically the following from LASERVISION: Filter T1P01 or Filter P1L07
I simply recommend to adapt the lightening of the room to the Transmission of the Googles, for example
LED PA7.047
Best Gerd
Phillips Safety Products has a glass filter that is 64%VLT, with OD 7+ from 700-1200nm, eyewear such as model LS-BG42-33-BK
filter specs at http://www.phillips-safety.com/media/wysiwyg/web/Laser-Specs/LS-BG42-LB%20Spec%20Sheet.pdf
We use Sperian 300, VLT 45%. Plastic and light weight, also good for THG at 266nm.
http://www.honeywellsafety.com/Products/Eye_and_Face_Protection/Filter_300_-_Femtosecond_Diode.aspx?site=/americas
VLT at around 33% sounds about right for this wavelength range, assuming your laser is mode locked / pulsed then you need to consider the robustness of the filter material used and not just its OD. I suggest you send your requirement details to a reputable company along with the laser details, average power and peak energy, repetition rate ( pulse frequency), diameter, divergence and see what they suggest. Typically they have software that will do the calculations on the requirement.
We are using YG2 from NoIr (http://noirlaser.com/yg2.html) there are quite cheap and having modelocked specifications, having 25% of transmission
You can use {NIR-Yad-38)for this region of lambda
Cite
Igor Pastirk
Coherent Inc.
You can have NOIR glasses in wide variety of models if the one you are currently using is uncomfortable. If I'm not mistaken filters (lens) and frames can be picked separately.
Cite
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