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 via externally applied AC electric field (DC electric field not allowed)
Functionality as a polarization modulator or pure phase retarder
Faster response time with significantly improved speed compared to previous versions
Operating wavelength λ: 400-700 nm/700-1100 nm/1100-1700 nm optional, clear aperture: Ø10 mm/Ø20 mm optional, retardation: half-wave/full-wave/multi-wave liquid crystal variable retarder optional
Compatible with voltage controller LCVRC-2K25, custom services for parameter specifications available

The LBTEK Quick Liquid Crystal Variable Retarder (QLCVR) is based on nematic liquid crystal and ITO glass materials, constructed with an antiparallel liquid crystal cell, housed in a mechanical casing with attached wiring. Under the influence of polyimide layer rubbing 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 liquid crystal variable retarder achieves flexible adjustment of the retardation. Based on its characteristics of adjustable retardation, the LBTEK Liquid Crystal Variable Retarder has two typical applications: 1. When used as a polarization modulator, the polarization direction of the incident linearly polarized light should be at a 45° angle to the fast axis of the liquid crystal variable retarder to achieve the widest adjustment range. 2. When used as a pure phase retarder, the polarization direction of the incident linearly polarized light should be at a 0° angle to the fast axis of the liquid crystal variable retarder. The retardation adjustment does not rely on mechanical components, ensuring broad spectral applicability, a wide operating temperature range, and excellent retardation uniformity. Compared to conventional liquid crystal variable retarders, the quick liquid crystal variable retarder significantly improves response speed. LBTEK offers standard QLCVR products with the operating wavelengths of λ of 400-700 nm, 700-1100 nm, and 1100-1700 nm. The clear aperture options include Ø10 mm and Ø20 mm, and the retardation modulation range can be selected as half-wave, full-wave, or multi-wave. Custom services for parameter specifications are available to meet diverse application needs. For details, please consult LBTEK Technical Support.

1-inch Quick Liquid Crystal Variable Retarder, Half-Wave, Uncompensated

Clear Aperture: Ø10 mm
Mechanical housing compatible with Ø1 inch optical component mounts
Operating wavelength options: 400-700 nm, 700-1100 nm, or 1100-1700 nm

The LBTEK 1-inch Half-Wave Quick Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength ranges of 400-700 nm, 700-1100 nm, or 1100-1700 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 100 nm and λ/2. With a clear aperture of Ø10 mm, it is 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 Quick Liquid Crystal Variable Retarder Mountable on Rotation Mount CRM-1BS

Product Model	Operating Wavelength	Clear Aperture	Response Time (Rise/Fall)	Unit Price	Lead Time
QLCVR-H10-A	400-700 nm	Ø10 mm	2.85 ms/0.35 ms@635 nm	$569.77	4 weeks
QLCVR-H10-B	700-1100 nm	Ø10 mm	10 ms/1.2 ms@1064 nm	$569.77	4 weeks
QLCVR-H10-C	1100-1700 nm	Ø10 mm	19 ms/2.5 ms@1550 nm	$569.77	4 weeks

2-inch Quick Liquid Crystal Variable Retarder, Half-Wave, Uncompensated

Clear Aperture: Ø20 mm
Mechanical housing compatible with Ø2-inch optical component mounts
Operating wavelength options: 400-700 nm, 700-1100 nm, or 1100-1700 nm

The LBTEK 2-inch Half-Wave Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength ranges of 400-700 nm, 700-1100 nm, or 1100-1700 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 200 nm and λ/2. With a clear aperture of Ø20 mm, it is 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 path alignment by users.

2-inch Quick Liquid Crystal Variable Retarder Mountable on the Rotation Mount CRM-2A

Product Model	Operating Wavelength	Clear Aperture	Response Time (Rise/Fall)	Unit Price	Lead Time
QLCVR-H20-C	1100-1700 nm	Ø20 mm	19 ms/2.5 ms@1550 nm	$840.27	4 weeks
QLCVR-H20-B	700-1100 nm	Ø20 mm	10 ms/1.2 ms@1064 nm	$840.27	4 weeks
QLCVR-H20-A	400-700 nm	Ø20 mm	2.85 ms/0.35 ms@635 nm	$840.27	4 weeks

1-inch Quick Liquid Crystal Variable Retarder, Full-Wave, Uncompensated

Clear Aperture: Ø10 mm
Mechanical housing compatible with Ø1 inch optical component mounts
Operating wavelength options: 400-700 nm, 700-1100 nm, or 1100-1700 nm

The LBTEK 1-inch Full-Wave Quick Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength ranges of 400-700 nm, 700-1100 nm, or 1100-1700 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 100 nm and λ. With a clear aperture of Ø10 mm, it is mounted in a mechanical housing with attatched wiring. The 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 path alignment by users.

1-inch Quick Liquid Crystal Variable Retarder Mountable on Rotation Mount CRM-1BS

Product Model	Operating Wavelength	Clear Aperture	Response Time (Rise/Fall)	Unit Price	Lead Time
QLCVR-F10-A	400-700 nm	Ø10 mm	21 ms/0.75 ms@635 nm	$858.32	6 weeks
QLCVR-F10-B	700-1100 nm	Ø10 mm	73 ms/1.75 ms@1064 nm	$858.32	6 weeks
QLCVR-F10-C	1100-1700 nm	Ø10 mm	184 ms/5.5 ms@1550 nm	$858.32	6 weeks

2-inch Quick Liquid Crystal Variable Retarder, Full Wave, Uncompensated

Clear Aperture: Ø20 mm
Mechanical housing compatible with Ø2-inch optical component mounts
Operating wavelength options: 400-700 nm or 700-1100 nm

The LBTEK 2-inch Full-Wave Quick Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for either the 400-700 nm or 700-1100 nm operating wavelength range. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 100 nm and λ. With a clear aperture of Ø20 mm, it is mounted in a mechanical housing with attatched wiring. The 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 Quick Liquid Crystal Variable Retarder Mountable on the Rotation Mount CRM-2A

	Product Model	Operating Wavelength	Clear Aperture	Response Time (Rise/Fall)	Unit Price	Compare	Lead Time
	QLCVR-F20-A	400-700 nm	Ø20 mm	21 ms/0.75 ms@635 nm	$938.72		6 weeks
	QLCVR-F20-B	700-1100 nm	Ø20 mm	73 ms/1.75 ms@1064 nm	$938.72		6 weeks

1-inch Quick Liquid Crystal Variable Retarder, Multi-Wave, Uncompensated

Clear Aperture: Ø10 mm
Mechanical housing compatible with Ø1 inch optical component mounts
Operating wavelength options: 400-700 nm, 700-1100 nm, or 1100-1700 nm

The LBTEK 1-inch Multi-Wave Quick Liquid Crystal Variable Retarder is coated with corresponding anti-reflection coatings for the operating wavelength ranges of 400-700 nm, 700-1100 nm, or 1100-1700 nm. Under the control of an external AC voltage (DC voltage not allowed), it can achieve flexible adjustment of retardation between approximately 0.5λ to 5.5λ. With a clear aperture of Ø10 mm, it is 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 Quick Liquid Crystal Variable Retarder Mountable on Rotation Mount CRM-1BS

Product Model	Operating Wavelength	Clear Aperture	Response Time (Rise/Fall)	Unit Price	Lead Time
QLCVR-M10-A	400-700 nm	Ø10 mm	110 ms/70 ms@635 nm	$725.35	6 weeks
QLCVR-M10-B	700-1100 nm	Ø10 mm	700 ms/200 ms@1064 nm	$725.35	6 weeks
QLCVR-M10-C	1100-1700 nm	Ø10 mm	850 ms/350 ms@1550 nm	$725.35	6 weeks

Quick Liquid Crystal Variable Retarders