COATING TRACES - CVI Laser Optics (CVI Laser, LLC) · 2019-06-03 · T-31 M P O Sn Coating Traces...

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COATING TRACESHIGH REFLECTION COATING TRACES

ND:YAG/ND:YLF .......................................................................................................... T-26

TUNABLE LASER MIRRORS ......................................................................................... T-28

MISCELLANEOUS MIRRORS ........................................................................................ T-30

ANTI-REFLECTION COATING TRACES

ANTI-REFLECTIVE OVERVIEW .................................................................................... T-31

0 DEGREE ANGLE OF INCIDENCE ............................................................................ T-33

45 DEGREE ANGLE OF INCIDENCE .......................................................................... T-36

CUBES AND POLARIZING COMPONENTS TRACES ......................................................... T-38

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HIGH REFLECTION COATING TRACES: Y1-Y4, HM AT 0 DEGREE INCIDENCE

Y1 - 1064nm - 0 DEGREES Y2 - 532nm - 0 DEGREES


HM - 1064/532nm - 0 DEGREES

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HIGH REFLECTION COATING TRACES: Y1-Y4, HM, YH, AT 45 DEGREE INCIDENCE



HM - 1064/532nm - 45 DEGREES YH - 1064/633nm - 45 DEGREES

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HIGH REFLECTION COATING TRACES: TLM1 AT 0 DEGREE INCIDENCE

TLM1 - 200nm - 0 DEGREES TLM1 - 400nm - 0 DEGREES



P-POL: UNP: - - - - - S-POL: 0°: - - - - - -

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HIGH REFLECTION COATING TRACES: TLM1 AT 45 DEGREE INCIDENCE




P-POL: UNP: - - - - - S-POL: 0°: - - - - - -

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HIGH REFLECTION COATING TRACES TLMB, KRF, ARF

TLMB - 800nm - 0 DEGREES KRF - 248nm - 0 DEGREES

TLMB - 800nm - 45 DEGREES KRF - 248nm - 45 DEGREES

P-POL: UNP: - - - - - S-POL: 0°: - - - - - -

ARF - 193nm - 45 DEGREES

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DOUBLE-V AND TRIPLE-V COATINGSBelow the existing paragraph add:Specifications for the standard CVI Laser Optics Double-V and Triple-V Coatings (0° AOI):X R ≤ 0.3% at 1064nm

X R ≤ 0.6% at 532nm

X R ≤ 1.5% at 355nm

V-COATINGSCVI Laser Optics V-type Coatings are the best choice for a single laser wavelength or multiple, closely spaced wavelengths. Examples are the principle argon laser lines at 488nm and 514nm, the neodymium transitions in a variety of host materials at 1047 – 1064nm and their harmonics, and the individual excimer laser lines. Said standard coatings are available for most laser lines.

CVI Laser Optics will manufacture V-type AR coatings for wavelengths from 193nm to 2100nm. Center wavelengths with the aforesaid range can be optimized for specific angles of incidence and polarizations by request.

Standard CVI Laser Optics V-type AR coatings on Fused Silica, Crystal Quartz, Suprasil, and N-BK7 have a damage threshold of 15J/cm2 at 1064nm, 20ns, 20Hz. Typical performance can often exceed 20J/cm2. Other coating designs are available to increase and/or prioritize the need for high laser damage threshold. Damage thresholds for AR coatings on N-SF11 and similar glasses are limited not by the coating, but by the bulk material properties. Our damage testing has shown a damage threshold for N-SF11 and similar glasses to be 4J/cm2.

When ordering, be sure to specify the following:X Wavelength

X Substrate Material

X Angle of Incidence

X Polarization

X Fluence in J/cm2

Specifications for the standard CVI Laser Optics V-type AR Coating (≥ 266nm): X R ≤ 0.25% at 0°, ≤ 0.1% typical

X R ≤ 0.75% for 45° P-Polarization

X R ≤ 1.0% for 45° Unpolarized

X R ≤ 1.3% for 45° S-Polarization

Other coating designs and methods may be applied to significantly reduce reflectance. These designs may be applied by request.

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BROADBAND MULTILAYER ANTIREFLECTION COATINGSBroadband antireflection coatings provide a very low reflectance over a broad spectral bandwidth. These advanced multilayer films are optimized to reduce overall reflectance to an extremely low level over a broad spectral range.

There are two families of broadband antireflection coatings from CVI Laser Optics: BBAR and HEBBAR™.

BBAR-SERIES COATINGSCVI Laser Optics offers seven overlapping broad band antireflection (BBAR) coating designs covering the entire range from 193 nm to 1600 nm. This includes very broad coverage of the entire Ti:Sapphire region. The BBAR coatings are unique in the photonics industry by providing both a low average reflection of ≤ 0.5% over a very broad range and also providing the highest damage threshold for pulsed and continuous wave laser sources (10J/cm2, 20 ns, 20 Hz at 1064 nm and 1MW/cm2 cw at 1064 nm respectively). Typical performance curves are shown in the graphs for each of the standard range offerings. If your application cannot be covered by a standard design, CVI Laser Optics can provide a special broad band antireflection coating for your application.

X R < 0.5% average over bandwidth at 0°

X R < 1.0% absolute over bandwidth at 0°

X R < 0.5% average over bandwidth for 45°P

X R < 1.5% average over bandwidth for 45°UNP

X R < 3.0% average over bandwidth for 45°S

HEBBAR™ COATINGSHEBBAR coatings exhibit a characteristic double-minimum reflectance curve covering a spectral range of some 250 nm or more. The reflectance does not exceed 1.0%, and is typically below 0.6%, over this entire range. Within a more limited spectral range on either side of the central peak, reflectance can be held to well below 0.4%. HEBBAR coatings are relatively insensitive to angle of incidence. The effect of increasing the angle of incidence (with respect to the normal to the surface) is to shift the curve to slightly shorter wavelengths and to increase the long wavelength reflectance slightly. These coatings are extremely useful for high numerical-aperture (low f-number) lenses and steeply curved surfaces. In these cases, incidence angles vary significantly over the aperture.

The typical reflectance curves shown below are for N-BK7 substrates, except for the ultraviolet 245 – 440 nm and 300-500 nm coatings which are applied to fused silica substrates or components. The reflectance values given below apply only to substrates with refractive indices ranging from 1.47 to 1.55. Other indices, while having their own optimized designs, will exhibit reflectance values approximately 20% higher for incidence angles from 0 to 15º and 25% higher for incidence angles of 30+º.

All HEBBAR coatings are specialty coatings, these are designs available for prototype and OEM applications.

To order a HEBBAR coating, append the coating suffix given in the table below to the product number. In some instances it will be necessary to specify which surfaces are to be coated.

All HEBBAR coatings are specialty coatings, these are designs available for prototype and OEM applications.


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ANTI REFLECTION COATINGS TRACES AT 0 DEGREE INCIDENCE

248nm - AR - 0 DEGREES

266nm - AR - 0 DEGREES 355nm - AR - 0 DEGREES


248-355nm - BBAR - 0 DEGREES


P-POL: UNP: - - - - - S-POL: 0°: - - - - - -

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1064nm - AR - 45 DEGREES800nm - AR - 45 DEGREES

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CUBES AND POLARIZING COMPONENTS TRACES

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COATING TRACES - CVI Laser Optics (CVI Laser, LLC) · 2019-06-03 · T-31 M P O Sn Coating Traces...

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Transcript of COATING TRACES - CVI Laser Optics (CVI Laser, LLC) · 2019-06-03 · T-31 M P O Sn Coating Traces...