Zero-Order Waveplate, Half-Wave, Quartz, 25.4 mm Diameter, 1064 nm
Model: 10RP02-34
Product Series Overview
Quartz Zero-Order Half-Wave PlatesThe 10RP02-34 Zero-Order Quartz Half Wave Plate is a temperature insensitive phase retarder for moderate bandwidth 1064 nm applications. This zero-order waveplate is constructed of two quartz plates, air-spaced to allow for use with high-power lasers. The assembly is held in a 1 inch (25.4 mm) diameter black anodized aluminum housing to protect the optic and permit convenient handling and mounting. The wave plate is antireflection coated to maximize transmission at the 1064 nm wavelength, and has a λ/2 retardation. Retardation in zero-order wave plates is insensitive to temperature since thermal changes between the multiple-order wave plates tend to cancel. A typical zero-order wave plate has a temperature coefficient of 0.0001 λ/°C compared to 0.0015 λ/°C for a multiple-order wave plate, providing less change in retardation over an extended temperature range. Zero-order wave plates offer several distinct advantages over multiple order wave plates. The primary benefit is a moderate insensitivity to wavelength change, making them ideal for laser diode or tunable laser applications. For example, a zero-order wave plate designed for 780 nm will provide useful retardance from 765–795 nm. By combining two wave plates whose retardations differ by exactly λ/4 or λ/2, a true λ/4 or λ/2 wave plate results. The fast axis of one plate is aligned with the slow axis of the other, so that the net retardation is the difference of the two retardations.
Quartz Half-Wave Waveplate Construction
These zero-order wave plates are constructed of two quartz plates, air-spaced to allow for use with high-power lasers. By combining the two air spaced waveplates whose retardations differ by exactly λ/2, a true half-wave waveplate results. The fast axis of one plate is aligned with the slow axis of the other, so that the net retardation is the difference of the two retardations. The waveplates are antireflection coated to maximize transmission for major laser wavelengths from 248-1550 nm. The waveplate assembly is mounted in a 12.7 mm or 25.4 mm diameter black anodized aluminum housing to protect the waveplate and permit convenient handling and mounting. Lines on the housing indicate the location of the slow axis.
Rotate the Plane of a Plane-Polarized Wave
A half-wave plate can rotate the plane of polarization from a polarized laser to any other desired plane. Suppose a plane-polarized wave is normally incident on a wave plate, and the plane of polarization is at an angle θ with respect to the fast axis. To see what happens, resolve the incident field into components polarized along the fast and slow axes, as shown. After passing through the plate, pick a point in the wave where the fast component passes through a maximum. Since the slow component is retarded by one half-wave, it will also be a maximum, but 180° out of phase, or pointing along the negative slow axis. If we follow the wave further, we see that the slow component remains exactly 180° out of phase with the original slow component, relative to the fast component. This describes a plane-polarized wave, but making an angle θ on the opposite side of the fast axis. Our original plane wave has been rotated through an angle 2θ.
Retardation is Insensitive to Wavelength
Zero-order wave plates offer several distinct advantages over multiple order wave plates. The primary benefit is a moderate insensitivity to wavelength change, making them ideal for laser diode or tunable laser applications. For example, a zero-order wave plate designed for 780 nm will provide useful retardance from 765–795 nm.
Retardation is Sensitive to Incidence Angle
Quartz waveplates are more sensitive to incidence angle than our Polymer waveplates. Polymer waveplates have excellent angular field of view and the retardation changes by less than 1% over a ±12° incidence angle.
Resources & Downloads
Drawings And Cad
ZERO-OR1-S(111.5 kB, PDF)
Other
10RP02-34 RoHS Certificate(707.7 kB, PDF)
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