The PEM‑200 Digital Photoelastic Modulator from Hinds Instruments is a high‑performance solution for accurate and reliable polarisation modulation in optical measurement systems.
Designed for demanding research and industrial environments, the PEM‑200 delivers exceptional duty cycle stability, broad spectral capability and modern digital control in a compact, energy‑efficient format.
Ideal for laboratories, universities and OEM instrumentation, the PEM‑200 supports a wide range of polarisation measurement, polarimetry and optical characterisation applications.
The Hinds Instruments PEM‑200 combines proven photoelastic modulation technology with a digitally controlled architecture to provide highly stable 1f and 2f modulation signals. An improved 50/50 duty cycle, simplified cabling and USB or optional Ethernet communication allow straightforward integration into modern optical and spectroscopic systems.
Supporting wavelengths from the vacuum ultraviolet (VUV) to the far‑infrared (FIR), the PEM‑200 accommodates multiple optical head materials, modulation frequencies and aperture sizes. High optical transmission, large acceptance angles and excellent laser power handling ensure consistent and repeatable performance across a wide variety of experimental conditions.
Low power consumption and robust construction make the PEM‑200 suitable for continuous operation and long‑term use.
High‑Precision Duty Cycle Control – 50% ± 1% at both fundamental (1f) and second harmonic (2f) frequencies
Compact Footprint – 62 mm × 135 mm × 174 mm
Simplified System Connectivity – Dual SMA cable from optical head to controller
Digital Communication Interfaces – USB 2.0 as standard; optional Ethernet for remote control and automation
Low Power Consumption – Typical 1.7 W (71 mA at 24 V), supporting energy‑efficient system design
Future‑Ready Architecture – Optional synchronous detection and signal processing (planned development)
The PEM‑200 Digital Photoelastic Modulator delivers the precision, stability and flexibility required for modern polarisation measurement systems. With its compact design, wide spectral compatibility and long‑term reliability, the PEM‑200 is trusted worldwide for scientific research, industrial metrology and advanced optical instrumentation.
The PEM‑200 Digital Photoelastic Modulator supports a wide range of polarisation‑based optical techniques, operating at modulation frequencies from 20 kHz to 84 kHz. Typical applications include:
By varying the material, size and geometry of the optical element, and by closely coupling matched drive and control electronics to the PEM optics, Hinds Instruments has developed a comprehensive range of photoelastic modulators. These systems support diverse applications across a wide spectral range, from ultraviolet (UV) to far‑infrared (far‑IR).
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