Achromatic Waveplate

Description

Achromatic waveplate is similar to zero order waveplate except that the two plates are made from different birefringent crystals. Since the dispersion of the birefringence of two materials is different, it is possible to specify the retardation values at a broad wavelength range. So, the retardation will be less sensitive to wavelength change. In other words, it can be used at a broadband wavelength range.

Specifications

Waveplate Type (Retardation Order):	Achromatic
Material:	Quartz and MgF2
Mounting:	Mounted, Unmounted
Shape:	Round, Square, Rectangle, Custom
Size (Largest Dimension):	10 mm
Design Wavelength:	1064 nm
Surface Quality (Scratch-Dig):	40-20
Retardation:	Lambda/2, Lambda/4, Other
Retardation Tolerance:	+/- Lambda/100
Transmitted Wavefront Distortion (TWD):	<= Lambda/4
Wavelengths Range:	450-2100

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Features

Material Crystal Quartz+MgF2
Dimension Tolerance +0.0/-0.2mm
Wavefront Distortion λ/4@632.8nm (for air spaced type)
Retardation Tolerance λ/100
Parallelism Surface Quality 40/20 scratch and dig
Clear Aperture >90% central area
Standard Wave quarter-wave(λ/4), half-wave(λ/2)
Standard Wavelength

450-650nm
550-750nm
650-1100nm
900-2100nm

Coating Both sides AR coated, R<1% per face
Damage Threshold Cemented: >500mJ/cm2, 20ns, 20Hz @1064nm
Air spaced: >5J/cm2, 20ns, 20Hz @1064nm

Applications

Laser optics
Spectroscopy
Imaging
Machine vision

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Ships from:: China
Sold by:: Union Optic
On FindLight:: since 2016

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Frequently Asked Questions

What is an achromatic waveplate?

An achromatic waveplate is similar to a zero order waveplate, but it is made from two different birefringent crystals, which allows for a broader wavelength range.

What is the damage threshold for the achromatic waveplate?

The damage threshold for the achromatic waveplate is >500mJ/cm2, 20ns, 20Hz @1064nm for cemented type and >5J/cm2, 20ns, 20Hz @1064nm for air spaced type.

What is the standard wavelength range for the achromatic waveplate?

The standard wavelength range for the achromatic waveplate is 450-650nm, 550-750nm, 650-1100nm, and 900-2100nm.

What is the wavefront distortion of the achromatic waveplate?

The wavefront distortion of the achromatic waveplate is λ/4@632.8nm (for air spaced type).

What materials are used to make the achromatic waveplate?

The achromatic waveplate is made from crystal quartz and MgF2.

Got more questions? Use the inquiry form to ask the supplier directly.