LBTEK-Your Trusted Partner For Optoelectronic Experiments!

Product Description

Nematic liquid crystal/ITO glass, anti-parallel liquid crystal cell, with mechanical housing and wiring
Uniform in-plane alignment of liquid crystal molecular fast axes, tunable retardance from tens of nanometers to λ/2 or from 0 to λ/2 via externally applied AC electric field (DC electric field not allowed)
Functionality as a polarization modulator or pure phase retarder
Fast response time, wide operating wavelength and temperature range
Operating wavelength λ: 400-700 nm/700-1100 nm/1100-1700 nm optional, clear aperture: Ø10 mm/Ø20 mm optional
Compatible with voltage controller LCVRC-2K25, custom services for parameter specifications available

The LBTEK Liquid Crystal Variable Retarder (LCVR) is based on nematic liquid crystal and ITO glass materials, constructed with an anti-parallel liquid crystal cell, housed in a mechanical casing with attached wiring. It comes in two variants: without retardation compensation and with retardation compensation. Under the influence of the polyimide layer's friction alignment, the fast-axis orientation of its liquid crystal molecules remains uniform across the entire component plane. By applying an external AC voltage (DC voltage not allowed), the uncompensated liquid crystal cell achieves flexible tunability with a retardation range of approximately several tens of nanometers to λ/2, while the compensated liquid crystal cell offers a retardation range from 0 to λ/2. Based on its tunable retardation characteristics, the LBTEK LCVR has two typical applications: 1. When used as a polarization modulator, the polarization direction of the incident linearly polarized light should be at 45° to the fast axis of the LCVR to achieve the widest adjustment range. 2. When used as a pure phase retarder, the polarization direction of the incident linearly polarized light should align with the fast axis of the LCVR at 0°. The retardation adjustment does not rely on mechanical components, ensuring fast response times. It is suitable for a broad spectrum while maintaining a wide operating temperature range and excellent retardation uniformity. LBTEK offers standard LCVR products with working wavelengths (λ) of 400-700 nm, 700-1100 nm, and 1100-1700 nm, available in both uncompensated and compensated versions. The clear aperture options include Ø10 mm and Ø20 mm. Additionally, LBTEK supports flexible customization of parameters to meet diverse application needs. For details, please consult LBTEK Technical Support.

1-inch Liquid Crystal Variable Retarders, Half-Wave, with Compensation

Coated with anti-reflection film of 400-700 nm, 700-1100 nm, or 1100-1650 nm
Retardation adjustable from 0 to λ/2
Clear aperture Ø10 mm
Mechanical housings compatible with Ø1 inch optical component mounts

The LBTEK 1-inch Half-Wave Compensated Liquid Crystal Variable Retarders is coated with corresponding anti-reflection coatings for the opertaing wavelength range of 400-700 nm, 700-1100 nm, or 1100-1650 nm. Through the effect of the compensation plate, it can achieve flexible adjustment of the retardation from 0 to λ/2 under the control of an external AC voltage (DC voltage not allowed). It features a clear aperture of Ø10 mm, mounted in a mechanical housing with attached wiring. The mechanical housing is compatible with Ø1-inch optical component mounts and is marked with the fast axis direction of the liquid crystal variable retarder for convenient optical path alignment by users.

1-inch Compensated Liquid Crystal Variable Retarder Assembly Diagram

Product Model	Operating wavelength λ	Clear Aperture	Unit Price	Lead Time
LCVR-H10C-A	400-700 nm	Ø10 mm	$684.3	2 weeks
LCVR-H10C-B	700-1100 nm	Ø10 mm	$684.3	2 weeks
LCVR-H10C-C	1100-1700 nm	Ø10 mm	$684.3	2 weeks

1-inch Liquid Crystal Variable Retarders, Half-Wave, Without Compensation

Coated with anti-reflection film of 400-700 nm, 700-1100 nm, or 1100-1650 nm
Retardation adjustable between approximately 50 nm-λ/2 or 60 nm-λ/2
Clear aperture Ø10 mm
Mechanical housings compatible with Ø1 inch optical component mounts

The LBTEK 1-inch Half-Wave Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength range of 400-700 nm, 700-1100 nm, or 1100-1650 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 50 nm-λ/2 or 60 nm-λ/2. It features a clear aperture of Ø10 mm, mounted in a mechanical housing with attached wiring. The mechanical housing is compatible with Ø1-inch optical component mounts, and the fast axis direction of the liquid crystal variable retarder is clearly marked for convenient optical alignment by users.

1-inch Liquid Crystal Variable Retarder Assembly Diagram

Product Model	Operating wavelength λ	Latency	Clear Aperture	Unit Price	Lead Time
LCVR-H10-A	400-700 nm	Approximately 50 nm-λ/2	Ø10 mm	$460.34	2 weeks
LCVR-H10-B	700-1100 nm	Approximately 50 nm-λ/2	Ø10 mm	$460.34	2 weeks
LCVR-H10-C	1100-1700 nm	Approximately 60 nm-λ/2	Ø10 mm	$460.34	2 weeks

2-inch Liquid Crystal Variable Retarders, Half-Wave, Without Compensation

Coated with anti-reflection films of 400-700 nm, 700-1100 nm, or 1100-1650 nm
Retardation adjustable between approximately 60 nm-λ/2 or 100 nm-λ/2
Clear aperture Ø20 mm
Mechanical housings compatible with Ø2-inch optical component mounts

The LBTEK 2-inch Half-Wave Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength range of 400-700 nm, 700-1100 nm, or 1100-1650 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 60 nm-λ/2 or 100 nm-λ/2. It features a clear aperture of Ø20 mm, mounted in a mechanical housing with attached wiring. The mechanical housing is compatible with Ø2-inch optical component mounts and is marked with the fast axis direction of the liquid crystal variable retarder for convenient optical alignment by users.

2-inch Liquid Crystal Variable Retarder Assembly Diagram

Product Model	Operating wavelength λ	Latency	Clear Aperture	Unit Price	Lead Time
LCVR-H20-A	400-700 nm	Approximately 60 nm-λ/2	Ø20 mm	$714.76	2 weeks
LCVR-H20-B	700-1100 nm	Approximately 60 nm-λ/2	Ø20 mm	$714.76	2 weeks
LCVR-H20-C	1100-1700 nm	Approximately 100 nm-λ/2	Ø20 mm	$714.76	2 weeks

2-inch Liquid Crystal Variable Retarders, Half-Wave, with Compensation

Coated with anti-reflection films of 400-700 nm, 700-1100 nm, or 1100-1650 nm
Adjustable retardation from 0 nm to λ/2
Clear aperture Ø20 mm
Mechanical housings compatible with Ø2-inch optical component mounts

The LBTEK 2-inch Half-Wave Compensated Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings within the operating wavelength range of 400-700 nm, 700-1100 nm, or 1100-1650 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between 0 nm and λ/2. It features a clear aperture of Ø20 mm, mounted in a mechanical housing with attached wiring. The mechanical housing is compatible with Ø2-inch optical component mounts, and the fast axis direction of the liquid crystal variable retarder is clearly marked for convenient optical path alignment by users.

2-inch Liquid Crystal Variable Retarder with Compensation Assembly Diagram

Product Model	Operating wavelength λ	Clear Aperture	Unit Price	Lead Time
LCVR-H20C-A	400-700 nm	Ø20 mm	$946.57	2 weeks
LCVR-H20C-B	700-1100 nm	Ø20 mm	$946.57	2 weeks
LCVR-H20C-C	1100-1700 nm	Ø20 mm	$946.57	2 weeks