LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Design wavelength: 400 nm-700 nm, 700 nm-1100 nm, and 1100 nm-1650 nm optional
Phase retardation δ =π/2
Commonly used to convert the linearly polarized light into the circularly polarized light

The LBTEK Achromatic Quarter-Wave Plate is composed of a quartz waveplate and an MgF2 waveplate with a spacer sandwiched in between, and the fast axes of the two waveplates are perpendicular to each other. When a beam of linearly polarized light is incident perpendicularly on the waveplate, it decomposes into o-light and e-light, which propagate along the original direction but vibrate in mutually perpendicular directions, with corresponding refractive indices of no and ne. Due to the different velocities of the two types of light in the crystal, the phase retardation produced after passing through a waveplate with a thickness of d is δ = (2π/λ)|no - ne|d. Here, |no - ne|d is the optical path difference, and the optical path difference produced by a quarter-wave plate is (2m + 1)λ/4, with a phase retardation of δ = (2m + 1)π/2, where m is a non-negative integer. The phase retardation of the achromatic quarter-wave plate is the combined result of the quartz waveplate and the MgF2 wave plate. By designing the thicknesses of the two waveplates, the achromatic quarter-wave plate produces a phase retardation of π/2, and the direction of the fast axis is determined by the waveplate that produces the larger phase retardation. The LBTEK Achromatic Quarter-Wave Plate is commonly used to convert the linearly polarized light into the circularly polarized light. Compared with other LBTEK quarter-wave plates, the achromatic wave plate is less sensitive to wavelength, with design wavelength ranges of 400 nm–700 nm, 700 nm–1100 nm, and 1100 nm–1650 nm available. Additionally, the achromatic waveplates sold by LBTEK are equipped with non-detachable mechanical housings, making them easy to use. Besides the standard achromatic quarter-wave plates, LBTEK also offers various customization services, including custom sizes, design wavelengths, phase retardation specifications, and more. For specific customization needs, please contact LBTEK Technical Support.

Attribute

Design wavelength400 nm-700 nm, 700 nm-1100 nm, and 1100 nm-1650 nm optional

Optical component materialQuartz crystal & MgF2

Mechanical housing diameter25.4 mm

Latencyλ/4

Mechanical housing diameter tolerance+0.0/-0.1 mm

CoatingRavg<0.5% @Design Wavelength (6°AOI, single surface)

Clear Aperture10.0 mm

Surface Parallelism<10 arcsec

λ/8 @632.8 nm

Surface finish (scratches/pits)40/20 (Quartz), 80/50 (Magnesium Fluoride)

Achromatic Quarter-Wave Plates, Clear Aperture Ø10.0 mm, with the Retaining Ring for Mounting

Design Wavelength: 400 nm-700 nm, 700 nm-1100 nm, and 1100 nm-1650 nm optional
Diameter: Ø25.4 mm
Clear Aperture: Ø10 mm
Mounted with mechanical housings

The LBTEK Achromatic Quarter-Wave Plates are commonly used to convert the linearly polarized light into the circularly polarized light. When the linearly polarized light passes through an achromatic quarter-wave plate, it produces an optical path difference of λ/4 and a phase retardation of π/2. The mounted achromatic quarter-wave plates feature non-detachable mechanical housings, with the product model and fast-axis indicator line engraved on the housing surface for easy identification and use by customers.

The LBTEK quartz achromatic quarter-wave plate is often installed in a rotation mount.

Product Model	Operating Wavelength	Clear Aperture	Unit Price	Lead Time
AQWP10-LNIR	1100 nm-1650 nm	10.0 mm	$713.06	6 weeks
AQWP10-SNIR	700 nm-1100 nm	10.0 mm	$713.06	6 weeks
AQWP10-VIS	400 nm-700 nm	10.0 mm	$713.06	6 weeks

Achromatic Quarter-Wave Plates, Clear Aperture Ø20.0 mm, with the Retainer Ring for Mounting

Design wavelength: 400 nm-700 nm, 700 nm-1100 nm, and 1100 nm-1650 nm optional
Diameter: Ø25.4 mm
Clear aperture: Ø20 mm
Mounted with mechanical housings

The LBTEK Quartz Achromatic Quarter-Wave Plate is often installed in a rotation mount.

Product Model	Operating Wavelength	Clear Aperture	Unit Price	Lead Time
AQWP20-LNIR	1100 nm-1650 nm	20.0 mm	$896.88	6 weeks
AQWP20-SNIR	700 nm-1100 nm	20.0 mm	$896.88	6 weeks
AQWP20-VIS	400 nm-700 nm	20.0 mm	$896.88	6 weeks

Achromatic Quarter-Wave Plates, Clear Aperture Ø20.0 mm, Mounted in SM1 Tubes

Design wavelength: 400 nm-700 nm, 700 nm-1100 nm, and 1100 nm-1650 nm optional
Clear aperture: Ø20 mm
Mounted in SM1 standard lens tubes

The LBTEK Achromatic Quarter-Wave Plates are commonly used to convert the linearly polarized light into the circularly polarized light. When the linearly polarized light passes through an achromatic quarter-wave plate, it produces an optical path difference of λ/4 and a phase retardation of π/2. The achromatic waveplate with a SM1 standard lens tube for mounting is installed inside an SM1 lens tube based on the retaining ring mounting. The SM1 thread allows for various types of adapters, and the tube is non-detachable. The tube surface is engraved with the product model and the fast-axis indicator line of the wave plate for easy identification and use by customers.

The achromatic waveplate mounted in a SM1 tube is directly installed on a rotation mount.

Product Model	Operating Wavelength	Clear Aperture	Unit Price	Lead Time
MAQWP20-LNIR	1100 nm-1650 nm	20.0 mm	$905.12	7 weeks
MAQWP20-SNIR	700 nm-1100 nm	20.0 mm	$905.12	7 weeks
MAQWP20-VIS	400 nm-700 nm	20.0 mm	$905.12	7 weeks