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     1、Achromatic Waveplate

    Introduction:

    Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material waveplates the working wavelength is very limited because of the dispersion of the material. While Achromatic Waveplate use two different kinds of material, the dispersions of the birefringence are also different. Hence such waveplate is not sensitive to the wavelength change. GATHERLIGHT design Achromatic Zero-Order Quartz-MgF2 waveplates with working wavelength range larger than 300nm and retardation better than l/50 for l/2 waveplate and better than l/100 for l/4 waveplate.

    Main advantages:

    Extremely broad wavelength ranges

    High damage threshold for Air-spaced Achromatic waveplate

    Low sensitivity within the designed wavelength

    Retardation tolerance up to ±l/100 over the wavelength range

    Main applications:

    Laser systems

    Spectrophotometry

    Optical communication devices

    DVD, CD, Polarization digital cameras

    Main properties:

    Material:               Crystal Quartz and MgF2

    Dimension Tolerance:     +0.0, -0.2 mm

    Wavefront Distortion:     λ/4 @ 632.8 nm

    Retardation Tolerance:     better than λ/50 for λ/2 achromatic waveplate

    better than λ/100 for λ/4 achromatic waveplate

    Wavelength Range:       standard wavelength

    Parallelism:             up to 10 arc second

    Surface Quality:         20-10 scratch and dig

    Standard Wavelength Ranges

    VIS: 460nm—620nm

    NIR: 700nm--1000nm

    IR: 1200nm—1650nm

    Retardation at 532nm = 184.951°   (order =  0)

    2、Rochon Polarizer

    Wide Wavelength Range

    Large Field Angle

    High Extinction Ratio

    Guarantee a wide transmission range,especially,suitable for UV applications

    Solit the ordinary and extrordinary ray,but only extraordinary beam is deviated.

    3、Wollaston Polarizer

    Wide Wavelength Range

    Both ordinary and extraordinary beams are deviated.

    Suitable for low power application and where the large deviations is required.

    4、Glan-Thompson Polarizer

    Large Acceptance Angle:Special design for the ratio of L/A(length/aperture)guarantees the wide acceptance angle

    High Polarization Purity

    Suitable for low power applications

    5、Glan Laser Polarizer

        

    High Polarization Purity

    Wide Wavelength Range

    High UV Transmission

    Available with two,one or no escape ports for extra power capacity

    Suitable for high power applications.

    6、Polarization Rotator

    ◇ Material: Crystal Quartz

    ◇ Dimension Tolerance: +0.0,-0.1mm

    ◇ Wavefront Distortion: <λ/8@632.8 nm

    ◇ Wavelength Range: 440-1600nm

    ◇ Retardation Accuracy: <5 arc minutes

    ◇ Surface Quality: 20/10 scratches & dig

    ◇ Clear Aperture: >90%

    ◇ AR Coating: R<0.2% at central wavelength

    ◇ Rotation Orientation: Clockwise (right-handed,standard)

    Excellent optical performance

    All kinds of coatings are available.

    Custom designs for other sizes and coatings are also available upon request.

    * Standard Wavelength:

    532nm,632.8nm,and 1064nm

    Order information: Part No.-Dimension-Wavelength-Coating

    For example: φ12.7,45deg rotator,632.8nm,AR coated,Polarization rotator

                        CPR-127-45° -632.8-AR

      

    7、Fresnel Rhomb Prisms

    ◇ Wavelength Range: 200-400nm(UV grade fused silica) 400-2000nm(BK7 glass)

    ◇ Dimension Tolerance: ±0.1mm

    ◇ Surface quality: 20/10 scratch & dig

    ◇ Surface flatness: λ/10 @ 633nm

    ◇ Retardation tolerance: ±2°

    ◇ Protective Bevel

    8、Mounts and holders for waveplates 

    ◇ Material and finished: Black anodized aluminum

    ◇ Outside Diameter(D) Tolerance: ±0.1mm

    ◇ Thickness(t) Tolerance: ±0.1mm

    ◇ Waveplate Diameter(f) Tolerance: +0.15,-0.0mm

    ◇ Rotating Holder:

    Material and finished: Black anodized aluminum

    Rotation Accuracy: <1°

    Dimension) Tolerance: ±0.1mm

    Custom designs for other sizes mounted are also available.

    9、Dual Wavelength Waveplates

    Dual wavelength waveplate is widely used on Third Harmonic Generation (THG) system. 

    When you need a NLO crystal for type II SHG (o+e→e), and a NLO crystal for type II 

    THG (o+e→e), the out put polarization from SHG can not be used for THG. So you must 

    turn the polarization to get two perpendicular polarization for type II THG. Dual wavelength 

    waveplate works like a polarizing rotator, it can rotate the polarization of one beam 

    and remain another beam’s polarization. Also the dual wavelength waveplate can be applied 

    to following systems:

    1. Type II SHG + Type II THG 

    2. Type II SHG + Type I THG 

    3. Type I SHG + Type I THG

    ◇ For example: we use KTP as SHG type II and LBO as THG type II, but the polarization of output beam from KTP is not optimized for THG type II. When we use a dual wavelength waveplate as drawing, it can change the 532nm beam to a special angle polarization but not change 1064nm beam at all.

    Specifications:

    Material: Crystal Quartz

    Diameter Tolerance: +0.0,-0.2mm

    Wavefront Distortion: <λ/8@633 nm

    Retardation Tolerance: <λ/100

    Parallelism: <3"

    Surface Quality: 20/10 Scratch and dig

    Dual Wavelength AR Coating: R<0.2% at fundamental wavelength; R<0.5% at SHG wavelength

    10、True Zero-Order Waveplates

    Material: Crystal Quartz

    ◇ Diameter Tolerance:  +0.0,-0.2mm

    ◇ Retardation Tolerance: <λ/300

    ◇ Wavelength Range: 1000-2100 nm

    ◇ Surface Quality: 40/20 scratch & dig

    ◇ Wavefront Tolerance: λ/8@633

    ◇ Parallelism: ≤3"

    ◇ Coating: R<0.2% on both surface at central wavelength

    High Damage Threshold.

    Wide Temperature Bandwidth.

    Wide Angle Acceptance

    GATHERLIGHT’s standard coatings are available .

    Custom designs for other sizes and coatings are also available upon request.

    11、Cemented True Zero-Order Waveplates

    ◇ Material: Crystal Quartz & BK7 glass

    ◇ Diameter Tolerance:  +0.0,-0.2mm

    ◇ Retardation Tolerance: <λ/300

    ◇ Wavelength Range: 400-2100 nm

    ◇ Surface Quality: 20/10 scratch & dig

    ◇ Wavefront Tolerance: λ/8@633

    ◇ Parallelism: ≤3"

    ◇ Coating: R<0.2% on both surface at central wavelength

    Wide angle Acceptance

    Wide Temperature Bandwidth.

    Broad spectral Bandwidth.

    GATHERLIGHT’s standard coatings are available .

    Custom designs for other sizes and coatings are also available upon request.

    12、Zero-Order Waveplates

    ◇ Diameter Tolerance: +0.0,-0.2mm

    ◇ Retardation Tolerance: <λ/300

    ◇ Wavelength Range: 240-2100 nm

    ◇ Surface Quality: 40/20 scratch & dig

    ◇ Wavefront Tolerance: λ/8 @ 633nm

    ◇ Parallelism: ≤3"

    ◇ Coating: R<0.2% on both surface at central wavelength 

    High Damage Threshold.

    Wide Temperature Bandwidth.

    Broad spectral Bandwidth.

    GATHERLIGHT’s standard coatings are available .

    Custom designs for other sizes and coatings are also available upon request.

     

    13、Low Order Waveplates

    ◇ Material: Crystal Quartz

    ◇ Thickness: 0.2-0.5 mm

    ◇ Diameter Tolerance: +0.0,-0.2mm

    ◇ Reātardation Tolerance: <λ/300

    ◇ Wavelength Range: 240-2100 nm

    ◇ Surface Quality: 20/10 scratch & dig

    ◇ Wavefront Tolerance: λ/8@633

    ◇ Parallelism: ≤3"

    ◇ Coating: R<0.2% on both surface at central wavelength

    High Damage Threshold.

    Better Temperature Bandwidth.

    Wide Temperature Bandwidth.

    .Custom designs for other sizes and coatings are also available upon request.

    14、Glan-Taylor Polarizer

    High Polarization Purity

    Wide Wavelength Range

    High Total Transmission

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