ThorLabs PA430 Polarimeter

The ThorLabs PA430 Polarimeter is a high-precision instrument for accurate characterization of polarized light in laboratory research and industrial environments. It measures the degree of polarization (DOP) from 0% to 100% with typical accuracy within ±1%, using a rotating retarder and photodetector to analyze incident light polarization states. The instrument delivers real-time DOP display and polarization parameter data via RS-232 serial interface, with optional analog output for external system integration. Its compact benchtop design features a metal housing suitable for optical table mounting, on-device controls, and standalone operation across standard laboratory temperature ranges. The PA430 operates on 115 VAC or 230 VAC (50/60 Hz) with low power consumption and accepts collimated or near-collimated light beams within its defined acceptance angle. It integrates into existing optical setups and is compatible with polarized and partially polarized light sources including lasers and LEDs.

– Technical Specifications

• Degree of Polarization (DOP): 0% to 100% measurement range
• Measurement Accuracy: Typically ±1% (dependent on conditions)
• Measurement Method: Rotating retarder with photodetector analysis
• Power Input: 115 VAC or 230 VAC, 50/60 Hz
• Data Interface: RS-232 serial for logging and remote control
• Analog Output: Optional integration interface available
• Acceptance Angle: Defined angular range for collimated/near-collimated beams
• Housing: Metal construction for durability
• Mounting: Standard optical table compatibility

– Key Features

• Real-time DOP and polarization parameter display
• Low power consumption for continuous operation
• Integrated on-device controls and display
• Serial and optional analog data outputs
• Compact benchtop form factor

– Typical Applications

• Polarization state characterization in optical research
• Laser and LED source quality verification
• Industrial optical performance validation
• Polarization-dependent system analysis

– Compatibility & Integration

The PA430 accommodates polarized and partially polarized light sources including lasers and LEDs. RS-232 connectivity enables data logging and remote operation within larger test systems. Standard optical table mounting allows integration into existing benchtop optical configurations.