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Cleaning Diffraction Gratings
Replicated aluminum diffraction gratings are difficult to clean. Traditional methods are time consuming and require hazardous chemicals. First Contact™ simplifies the cleaning process and can provide excellent results.
Please note: Replicated aluminum and gold diffraction gratings, those with the grating structure bonded to a glass substrate, are very fragile and can be damaged during polymer removal. Older or used gratings with pre-existing damage are even more susceptible to damage as the liquid polymer can flow under frayed or exposed grating structure edges and remove some of the grating structure. Considering this, cleaning gratings should not be attempted unless the grating is contaminated to the point it can not be used unless cleaning is attempted.
That being said, we and our customers have successfully cleaned many replicated gratings. The method with the best success is to apply a thin layer of polymer that, when dry, is very pliable and exhibits minimal adhesion to the substrate. A peel tab can be gently touched to the dry film to begin the peeling process. See photos showing a thin layer of spray polymer applied to a grating, and the peel tab applied to an edge and peeling the dry film.
 
Please contact us if you need to clean a replicated grating and we can provide additional information.
Formulated to Clean and Protect Fused Silica Phase Masks
- Lifts from nanostructures
- Removes contamination
- Protects diffraction gratings from dust, abrasions,
oxygen, water and water vapor, gaseous sulfur compounds, and fingerprints
- Watch our video when we clean an Ibsen 3000/mm fused silica phase mask. See how the polymer flows into the grating features and replicates the grating structure in the polymer!
Try First Contact today.
Instructions for Phase Masks
Simply apply a generous amount of First Contact™ to the phase mask and allow it to dry. If the contaminants are only particulates the application rate may be as little as 1 ml for each 3.5 square inches, 22.5 square centimeters; but if there are skin oils or fingerprints use 1 ml for each 2 square inches, 13 square centimeters. When lifting oils from a contaminated phase mask a thick polymer coat will help dissolve the oils. If the oily contamination is heavy, it may help to rinse with an organic solvent prior to using First Contact.
Our First Contact Polymer from Photonic Cleaning Technologies, LLC is your go-to solution for maintaining critical optical equipment. Our polymers can enhance your diffraction gratings cleaning process, ensuring optimal performance and longevity over typical cleaning methods where cleaning residues and nano- and micro-scale contaminants are left behind in the grating structure.
Why choose First Contact? Unlike traditional methods, our unique formulation removes dust, fingerprints, and contaminants without damaging sensitive surfaces. Aluminum, gold, and other grating coatings are extremely fragile and the best possible cleaning process is a no-touch process utilizing a thin coating of our spray formula polymer.
Using our polymer is often they only way to clean delicate gratings and will prolong the life of your equipment, ensuring high-quality optical performance. Experience the difference with our advanced technology that promises cleaner, clearer results. With our products, you'll achieve the precision necessary for your applications while protecting your investment. Elevate your cleaning routine today with our reliable and innovative solutions!
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