Temperature-Controlled Tunable Liquid Crystal Phase Retarder, With Compensation LVVF10T-T4
JCOPTIX compensated temperature-controlled variable LC phase retarders combine high-quality antiparallel liquid-crystal cells, nematic LC material, and polymer compensation waveplates. Built-in TEC heaters and temperature sensors stabilize operating temperature despite ambient fluctuations for constant retardance. A Y-cable has a male BNC connector for JCOPTIX LVC-AC25 retardance control and a male M8 threaded four-pin aviation connector for LTC-AC50 temperature control. Users should tune PID in the actual environment for optimal performance; see instructions. Housings have SM05 internal and SM1 external threads for optomechanics. Applied AC voltage over 0-±25 V rapidly adjusts compensated half-wave retardance from -10 nm to λ/2, or compensated full-wave retardance from -10 nm to λ over 0-±25 V. They suit fast, precise polarization or retardance adjustment. As temperature rises, LC △n and maximum retardance decrease, while rise/fall response between the same voltages improves; see detailed data. In uncompensated retarders, anchoring at the polyimide (PI) surface prevents near-substrate molecules from reorienting under voltage, leaving ~30 nm residual retardance even at high drive. A low-retardance compensation waveplate with slow axis perpendicular to the cell's slow axis cancels retardance over the 0-±25V drive range, enabling zero retardance. Two series are available: compensated half-wave temperature-controlled retarders with -10 nm–λ/2 range, and compensated full-wave retarders with -10 nm–λ range. Both faces have band-specific antireflection coatings. Fast response, high transmission, adjustable retardance/temperature, and flexible custom specifications meet different needs. Active LC products require AC drive; DC causes charge accumulation and damage. Recommended drive: 1-2 kHz square wave, amplitude 0-±25 V, duty cycle 50%. Voltage above 25 V may degrade or damage devices. Compensated half-wave temperature-controlled LC phase retarders. Models: LVVH10T-T2, LVVH10T-T3, LVVH10T-T4. Range covers half-wave; Ø11.5 mm clear aperture; temperature range from room temperature minus 1℃ to room temperature plus 35℃; LVC-AC25/LTC-AC50 voltage/temperature control; wavelength coverage described as the entire visible band. JCOPTIX offers bands 400-700 nm, 650-1100 nm, and 1050-1700 nm. External AC flexibly adjusts -10 nm to λ/2 with high uniformity over the aperture. Response is fast and temperature control wide-ranging/stable; see specifications and response-time tabs. Recommended operating temperature is 0-45℃; outside it, maximum retardance may fail to reach half-wave and irreversible damage can occur. Housings fit SM05/SM1 threaded mounts and mark the slow axis for alignment. Compensated full-wave temperature-controlled LC phase retarders. Models: LVVF10T-T2, LVVF10T-T3, LVVF10T-T4. Range covers full-wave; Ø11.5 mm aperture; temperature range described relative to room temperature as -1 to +35℃; LVC-AC25/LTC-AC50 voltage/temperature control; wavelength coverage described as the entire visible band. Available bands are 400-700 nm, 650-1100 nm, and 1050-1700 nm. External AC adjusts -10 nm to λ with high aperture-wide uniformity, fast response, and wide, stable temperature control; see specifications/response-time tabs. Recommended operation is 0-45℃; outside this range, full-wave retardance may not be reached and irreversible damage can occur. Housings fit SM05/SM1 threaded mounts and mark the slow axis for alignment.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Operating Wavelength | 1050-1700 nm |
| Antireflection Coating | 1050-1700 nm |
| Retardance [Lower Limit -10 nm; Upper Limit λ (No Conversion)] | -10 nm - λ |
| Reflection Ravg [0° angle of incidence] | Ravg<0.5% (0° Angle of Incidence) |
| Operating Voltage [AC Drive; DC Must Not Be Used] | 0-±25 V |
| Effective Clear Aperture | Ø11.5 mm |
| Retardance Uniformity | <λ/20 |
| Surface Finish | 60/40 |
| Surface Flatness [@633 nm] | λ/4@633 nm |
| Element Material | UV Fused Silica Glass / Nematic Liquid Crystal / Polymer Compensating Waveplate |
| Operating Temperature | 0-45℃ |
| Response Time [Switching Between 0 nm and λ/2, Rise/Fall; Test: 635 nm, 25℃] | 38.11 ms / 0.75 ms @ 635 nm，25 ℃ |
| Response Time [Switching Between 0 nm and λ, Rise/Fall; Test: 635 nm, 25℃] | 129.4 ms / 1.375 ms @ 635 nm，25 ℃ |
| Housing Thread Specifications | SM05 Internal Thread/SM1 External Thread, Fits SM05 and SM1 Optical Element Mounts |
| Temperature Sensor | 10 kΩ NTC Temperature Sensor |
| Heating Capacity | typical:10 W |
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Datasheet
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