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High-Reflection Coatings

MAXBRIte™ Coatings

MAXBRIte™ (multilayer all-dielectric xerophilous broadband reflecting interference) coatings are, without a doubt, the best broadband mirror coatings commercially available. The /001 coating covers the visible spectrum from 480 nm to 700 nm, the /003 is useful for diode laser applications from 630 nm to 850 nm, and the /009 coating offers enhanced blue response. They all reflect well over 98% of incident laser radiation within their respective wavelength ranges.

These coatings exhibit exceptionally high reflectances for both s- and p-polarizations. In each case, at the most important laser wavelengths and for angles of incidence as high as 45 degrees, the average of s- and p-reflectances exceeds 99%. For most applications, they are superior to metallic or enhanced metallic coatings.
MAXBRIte™ Coating for 480 to 700nm (/001)
/001
MAXBRIte™ /001 coating

 
  • Exceptional reflectance for s- and p- polarization
  • Excellent performance for common visible lines
  • Suitable for external laser-beam manipulation and many instrument applications
  • Ravg > 98% from 480 to 700 nm
  • Damage threshold: 0.92 J/cm2± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm
The standard /001 coating is suitable for instrumental and external laser-beam manipulation tasks. It is the ideal choice for use with tunable dye and parametric oscillator systems. The structural design of this coating is such that flatness specifications as tight as l/10 can be maintained using low-expansion substrate materials.
MAXBRIte™ coating for 630 to 850 nm (/003)
/003
MAXBRIte™ /003 coating

 
  • Useful with visible, near-infrared diode, and HeNe lasers Easily accommodates diode wavelength drift
  • Ideal for pointing and alignment applications
  • Ravg > 98% from 630 to 850 nm
  • Damage threshold: 0.92 J/cm2± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm
The /003 coating covers all the important diode laser wavelengths from 630 to 850 nm; therefore, it can be used with both visible and near-infrared diode lasers. This broadband coating is ideal for applications employing nontemperature-stabilized diode lasers where wavelength drift is likely to occur. The /003 also makes it possible to use a HeNe laser to align diode systems.
UV MAXBRIte™ coating for 245 to 390 nm (/007)
/077
MAXBRIte™ /007 coating

 
  • Excellent performance for excimer and YAG third- and fourth-harmonic lines, as well as broadband ultraviolet sources
  • Superior reflectance from 0 to 45 degrees incidence for s- and p-polarizations
  • Ravg > 98% from 245 to 390 nm
  • Damage threshold: 0.92 J/cm2± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm
    • The /007 coating offers superior performance for ultraviolet applications. It is ideal for use with many of the excimer lasers, as well as the third and fourth harmonics of most solid-state lasers. It is also particularly useful with broadband ultraviolet light sources, such as mercury and xenon lamps. Due to mechanical stresses within this intricate coating, it is limited to substrates of l/4 figure or less.
    Extended MAXBRIte™ coating for 420 to 700 nm (/009)
    /009
    MAXBRIte™ /009

     
    • Wavelength range extended even farther than /001 MAXBRIte™
    • Outstanding performance from 0 to 45 degrees incidence
    • Ravg > 98% from 420 to 700 nm
    • Damage threshold: 0.4 J/cm2± 10%, 10-nsec pulse (35 MW/cm2) at 532 nm on silica substrate
    The /009 extended-range coating offers superior response below 500 nm, and it is particularly useful for helium cadmium lasers at 442 nm, or the blue lines of argon-ion lasers. Like the /007, mechanical stresses in this complex coating limit its use to substrates of l/4 figure or less.

    Because of the many applications for these superior coatings we stock a number of precoated substrates.
    MAXBRIte™ Coatings
    Wavelength
    Range
    (nm)    		 Average
    Reflectance
    (%)    		 Angle of
    Incidence
    (degrees)     		Damage
    Threshold     		COATING
    SUFFIX
    480-700 98 0±45 0.92 J/cm2 ± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm /001
    630-850 98 0±45 0.92 J/cm2 ± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm /003
    245-390 98 0±45 0.92 J/cm2 ± 10%, 10-nsec pulse (57 MW/cm2) at 532 nm /007
    420-700 98 0±45 0.4 J/cm2 ± 10%, 10-nsec pulse (35 MW/cm2) at 532 nm on silica substrate /009

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    Optics Guide Copyright 2002 Melles Griot Inc.