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How To Clean Laser OPtics

We do not only provide the service to clean your laser optics but also show you how to do it by yourself.

Optics | How to Clean Laser Optics

At high laser powers, even the smallest contamination can cause the laser beam to destroy the coating and thus the optics. At LASER COMPONENTS we therefore follow strict rules when cleaning. This is the only way we can ensure the high quality of our optics.

Handling Laser optics

Cleanliness is essential

1. Wear Gloves

Always wear gloves when handling laser optics!

Fingerprint residue cannot be completely removed even after just a short amount of time. If a fingerprint does get on the optics, it must be removed immediately as described below. 

2. Blow it Off!

Never wipe off larger particles or impurities with a cloth. Depending on the particles, scratches may appear on the optics. Use a bellows or nitrogen instead.

3. Assessment

How to Check Your Optics.  Check your optics carefully - if possible, in a darkened room. Inspection in transmitted light is best carried out using a clold light source. Errors and defects can also be easily detected in incident light at an angle. 

Classify Size of Defects. During inspection, make sure that the environment is low in dust; this is the case, for example, with a laminar flow box. A measuring magnifier or a comparison template according to DIN-ISO 10110/7 will help you classify the size of defects.

4. Never Clean Metal Coatings

Metal coatings are incredibly soft. Even if the optics are easily wiped, you can damage the coating. So: Hands off!

5. Laser Optics Are Not Glasses

Eyeglass cleaning cloths often contain anti-fogging substances that are desposited on the optics and damage the coating. This lowers the laser damage threshold.

Only use pure actetone or isopropanol as a cleaning agent. 

6. Observe Safety Instructions

Observe the standard safety regulations regarding cleaning agents. Read the safety datasheets carefully. Use solvent-resistant gloves and ensure that your working area is well ventilated.

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Use  acetone- or isopropano-resistant cleaning cloths such as, for expample, Whatman paper.

As soon as the cleaning cloth begins to fuzz, it should be replaced with a new one.

Fold a cloth so that the surface is as flat as possible, and the cloth can be held in a self-clamping tweezer. Please make sure that no parts of the tweezers protrude over the cloths; otherwise you will scratch your optics.

Now slightly moisten the cloth with acetone or isopropanol. You must experiment a little bit to find the optimal amount. Too much solvent will leave streaks; too little will cause the cloth to fuzz faster.

It is best to clean the optics in circular movements. Start in the middle and work your way to the angle. Make sure that you exert constant presssure that is not too little on the surface using the cloth.

We also offer a professional cleaning service.

Contact us for further Information
Samuel Thienel
Technical Sales Engineer
Samuel Thienel
CM2 7PR Chelmsford Essex

Laser Optics

manufactured by LASER COMPONENTS

Explore Our Product Portfolio

Achromatic Waveplates

Achromatic waveplates consists of two plates.

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Aspherical lenses correct aberrations, which in monochromatic light include image sharpness errors and distortion.

A typical application of these lenses is the focusing of a collimated beam onto an optical fiber.
Brewster Plates

Brewster plates are used to separate s- and p-polarized light.

Brewster plates have a rectangular shape and are inserted at a specific angle of incidence to the laser beam. Light that is polarized parallel to the plane of incidence/reflection is completely transmitted at Brewster’s angle, whereas about 50 % of s-polarized light is transmitted.
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Cavity end mirrors are used to generate the laser beam in the resonator.

Resonator end mirrors, also known as cavity mirrors, are designed to have high reflectivity at the desired laser wavelength in order to maximize the efficiency of the laser.
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Cylindrical Lenses


We offer plano-concave and plano-convex cyclindrical lenses in rectangular, square, and round form.
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Dichroic Mirrors

combine or separate two or more beams with different wavelengths.

Customized dichroic mirrors that are suitable for your individual application are manufactured upon request. 
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Many corrections can be made with a single diffractive element.

37 Hex Element 37 Hex Element
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DOEs is advantageous when one element is needed to produce several beams.

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Diffractive Optical Elements (DOEs) Made of Plastic

Plastic DOEs for beam shaping or beam splitting at low or medium power.

Beam Splitter ZnSe DOE Beam Splitter ZnSe DOE
Diffractive Optical Elements (DOEs) for CO2-Lasers

For the typical wavelength range in the near and far IR

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Diffractive Optical Elements (DOEs) for Medical Applications

For the typical wavelength range in the far IR (2.94 µm)

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Samuel Thienel
Technical Sales Engineer
Samuel Thienel
CM2 7PR Chelmsford Essex

LASER COMPONENTS UK - Your competent partner for optical and optoelectronic components in the United Kingdom.

Welcome to LASER COMPONENTS UK Ltd., your expert for photonics components. Each product in our wide range of detectors, laser diodes, laser modules, optics, fiber optics, and more is worth every Pound (£/GBP). Our customized solutions cover all conceivable areas of application: from sensor technology to medical technology. You can reach us here:

Goldlay House, 114 Parkway
Chelmsford Essex CM2 7PR
United Kingdom

Phone: +44 1245 491 499
Email: info(at)

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Samuel Thienel
Technical Sales Engineer
Samuel Thienel
CM2 7PR Chelmsford Essex
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Laser Components

Goldlay House, 114 Parkway
Chelmsford Essex CM2 7PR
United Kingdom

Phone: +44 1245 491 499

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