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Coating Summarization  

Phosctech produces a wide variety of coatings from simple single layer antireflective coatings using MgF2 and mirror coatings to complex multilayer dielectric stacks. Typical types of dielectric coatings are BBAR, V-coatings and dual wavelength coatings.

Phosctech measure the coating spectral curves by Perkin-Elmer Lambda 900 (UV/VIS/NIR) spectrophotometer for our coatings. The coating spectral curves measured by Perki-Elmer Lambda 900 can be provided upon your request. Phosctech make coatings meet the Standard MIL Specs test of Abrasion (MIL-C-675A), Adhesion(MIL-M-13508C); Hardness (MIL-M-13508C)

 

  Coating type

Properties and Applications

Antireflection

Single layer MgF2

Applied to materials with refractive indices from 1.45 to 2.4. The most popular antireflective coating for visible wavelengths. It is insensitive to change in incidence angles.

Multilayer “V”

Used to provide low reflectance within a narrow durable wavelength band for most laser applications. Minimum reflection can be less than 0.1%

Broadband Multilayer

These coatings have excellent performance over a broad spectral broadband. Coating performance is sensitive to angle of incidence.

Dual wavelength Band

Offer very low reflectance at low widely spaced wave-lengths, such as Nd:YAG Laser(1064) and its second harmonic(532)

Partial Reflection

 Narrow Band

Provide 50% reflection and transmission at an angle of 45°incidence for a single wavelength. Perfect for beamsplitter applications. Transmission/reflection (T/R) ratio of 20/80. Additional T/R ratios for beamsplitters are available upon request.

Broadband

Provide 50% reflection and transmission over a wide bandwidth. PHOSCTECH also provides coatings with different R/T ratios and specific angles of incidence.

Beamsplitter

Laser Line
Polarizing Beamsplitters

High reflection for s-polarized and antireflection for p-polarized for laser applications

Broadband Polarizing Beamsplitters

Wide wavelength bandwidths provide high reflection to s-polarized and antireflection to p-polarized.

Dichroic Beamsplitter Mirrors

These coatings separate the laser fundamental and the pump wavelength or the fundamental and the second harmonic. They are specifically applied to laser morrors

DPSS laser

Diode Pumped laser
Optics Coating(DPO)

These coatings are designed for a diode pumped laser.

They can be deposited on a variety of substrates and have a high damage threshold.

High Reflection

Dielectric High
Reflective Coatings

Provide high reflectance over a broad bandwidth and are ideal for tunable lasers or white light applications.

Metallic High
Reflective Coatings

Metallic coatings have low peak reflectance, mechanical durability and a high damage threshold, but they have an extremely broad bandwidth and low cost. They are insensitive to angle of incident light and polarization.

 

   
 

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Tel:+86-(0)591-87846955 +86-(0)591-87846952 Fax: +86-(0)591-87856157 Website:www.phosctech.com E-mail: sales@phosctech.com