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首页 Optical Accessories Optical Components Reflector Ultra smooth and ultra-high (reflectivity>99.995%) reflectivity mirror flat/concave mirror Super-smooth Ultra-high Reflectivity Concave Mirror 1530-1600nm 12.7x6.35mm

    • Super-smooth Ultra-high Reflectivity Concave Mirror 1530-1600nm 12.7x6.35mm

    The so-called super mirrors, used in ring laser gyroscopes or certain scientific applications, require coating optical components with extremely low loss (i.e., absorption and scattering). These mirrors also exhibit a maximum reflectivity of R > 99.998% and total losses < 10 ppm. Idealphotonics uses a German-improved IBS machine, which is capable of producing coatings on ultra-polished substrates. The cleanliness of the machine and environment is maintained in a dedicated clean room, where extensive substrate pre-treatment and post-treatment processes are carried out. Measurement devices for inspection, such as white light profilometers and high-resolution microscopes (up to x 1000), are in place. Customized cavity decay setups allow for the determination of reflectivity and reference losses with accuracy up to four decimal places.

    产品特点Extremely high reflectivity (R > 99.99% in the visible and near-infrared spectrum range, with R > 99.999% confirmed at several wavelengths between 1000-1600 nm). 、 The center wavelength can be customized. 、 All mirrors used for CRD experiments are equipped with anti-reflective coatings on the back. 、 They feature flat and spherical curved fused silica substrates with high-quality polishing, and an RMS roughness of ≤ 1.5 Å.

    产品货号A80160426

    应用领域Laser gyroscope 、 CRD cavity decay system design 、 Optical path diagnostics

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    电话：13061644116

    邮箱：moli@microphotons.com

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    主要参数
  • 核心参数

  • 尺寸图

    • Main Parameters

    The Fraunhofer Institute for Applied Optics and Precision Engineering in Jena measured the total backscatter (TSB, as described in ISO 13696) of our currently produced 633nm super mirrors, achieving a TSB value of 1.1 ppm. A typical absorption and residual transmission rate of < 15 ppm corresponds to a reflectance of at least 99.998%. For longer wavelengths, this can even reach 99.999%, which is very close to the perfect laser mirror with R = 100%.

     

    The results have been confirmed by our internal cavity decay setup and scattering measurements. For the above values, ultra-polished substrates with a surface roughness of < 1 Å rms are essential. Their quality was checked with a white light profiler. Below are some measurement values:


    Scatter TSB

    Absorption

    Reflection CRD

    HR 532 nm / 0°

    4.9 ppm 1) (int. ARS)

    10.2 ppm 2)

    > 99.997% 2) (T~5 ppm)

    HR 633 nm / 0°

    1.1 ppm 1)


    > 99.998% (T~5 ppm)

    HR 1064 nm / 0°

    (< 1 ppm) 3)

    < 2 ppm 4)

    > 99.999% (T~5 ppm)

    HR 2940 nm / 0°

    24 ±12 ppm 6)

    99.994% 5) (T=36 ppm)

    1) Measured at IOF Jena; 2) Measured at LZH; 3) Calculated from surface roughness; 4) Measured at ILT Aachen;5) measured by customer; 6) 1-R-T


    Material

    Infrared-grade fused silica Infrasil

    Shape

    Round

    Diameter(Ø)

    12.7，25.4 mm ,50.8(-0.1 mm)

    Thickness (t)

    6.35 mm (±0.1 mm)

    Edge Thickness

    6.35 mm

    Parallelism

    5’

     


    Guaranteed Roughness

    Flatness

    Availability

    Premium

    RMS<0.2 nm*(<2Å)

    <λ/20

    Ø12.7-25 mm

    always 2,000 pcs.on stock (various radii and plane)

    superpolished

    RMS<0.1 nm*(<1Å)

    <λ/10

    on request

     * Tested with Zygo NewView 9000 within sample length 3- 1000 um


    Optical Parameters

    Front (S2)

    Optical Parameters

    Back (S1)

    Shape

    Concave

    Shape

    Plain

    Radius of Curvature

    1,000 mm (±1 %)

    Chamfer

    0.3 mm (±0.1 mm)

    Chamfer

    0.3 mm (±0.1 mm)

    Test Area Øe

    20

    Test Area Øe

    20

    Surface Tolerance

    3/0.2(0.2) [L/10 @546.1nm]

    Surface Tolerance

    3/-(0.2) [L/10 reg. @546.1nm]

    Cleanliness

    5/2x0.04; L1x0.004

    Cleanliness

    5/2x0.04; L1x0.004




    Test Plan

     

    Related Tests

    Direct Measurement of Optical Loss

    Internal Testing Equipment

    图片1.png图片2.png图片3.png

    Optical Surface Quality Analysis

    Automated Roughness Testing

    Laser Loss Testing


    The low roughness values are consistently maintained across all spatial frequencies. Exemplary roughness measurements of Premium substrates at different magnifications demonstrate high quality regardless of the sampling length.

     


    Customized product parameters example

    9.png 


    Ordering info

    CRD- □□□□-☆-▽

    □□□□: Size


    126: Diameter: 12.7mm × Thickness: 6.35mm
    256: Diameter: 25.4mm × Thickness: 6.35mm
    508: Diameter: 50.8mm × Thickness: 8mm (other sizes available)

     

    ☆ : Reflectivity
    39: > 99.9%
    49: > 99.99%

     

    ▽: Operation Wavelength Range
    760: 760nm
    980: 980nm
    1064: 1064nm
    1512: 1512nm
    2000: 2000nm
    2327: 2327nm


    Wavelength

    Substrate material

    Diameter(Inch)

    curvature

    reflectivity

    angle of incidence

    optical wedge

    PN #

    2327

    Infrasil 302

    0.5"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-126-49-2327

    2004

    Infrasil 302

    1.0"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-246-49-2004

    2050

    Infrasil 302

    0.5"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-126-49-2050

    1742

    Infrasil 302

    0.5"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-126-49-1742

    1650

    Corning 7980

    0.5"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-126-49-1650

    1600

    Corning 7980

    0.5"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-126-49-1600

    1550

    Corning 7980

    0.5"

    1m   ROC

    >99.99%

    0

    None

    CRD-126-49-1550

    1550

    Corning 7980

    1.0"

    1m   ROC

    >99.99%

    0

    None

    CRD-246-49-1550

    1512

    Corning 7980

    0.5"

    1m   ROC

    >99.99%

    0

    None

    CRD-126-49-1512

    1434

    Infrasil 302

    1.0"

    1m   ROC

    >99.99%

    0

    None

    CRD-246-49-1434

    0760

    Corning 7980

    0.5"

    1m   ROC

    > 99.995 %

    0

    None

    CRD-126-49-0760

    0760

    Corning 7980

    1.0"

    1m   ROC

    > 99.995 %

    0

    None

    CRD-126-49-0760

    1392

    Corning 7980

    0.5"

    1m   ROC

    > 99.99 %

    0

    30ʹ

    CRD-126-49-1392

    0633

    Corning 7980

    1.0"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-246-49-0633

    1064

    Corning 7980

    1.0"

    1m   ROC

    > 99.99 %

    0

    None

    CRD-246-49-1064


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