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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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