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Overview
Venuslab™ Precision Balanced Photodetector Series
The Venuslab™ Precision Balanced Photodetector Series is a laboratory-grade optoelectronic instrument engineered specifically for weak optical signal extraction and coherent heterodyne detection. In modern photonics experiments, laser sources are often accompanied by Relative Intensity Noise (RIN), which severely limits the system's ability to detect extremely weak signals. By integrating a pair of precisely matched photodiodes (Si or InGaAs) and ultra-low noise differential amplification circuitry, this series accurately extracts the difference frequency signal from two interfering beams while effectively canceling out Common-Mode Noise.
This superior Common Mode Rejection Ratio (CMRR) enables Venuslab™ detectors to sensitively capture effective signals at the nanowatt (nW) or even picowatt (pW) level amidst strong background noise, making them the ideal demodulation core for Doppler Wind LiDAR, Optical Coherence Tomography (OCT), and Quantum Optical Transmission systems.
Detailed Applications
- Coherent Doppler LiDAR: In wind speed measurement, balanced detectors are used to capture the weak Doppler frequency shift signals generated by the beating of aerosol scattered light and the local oscillator, enabling precise mapping of wind fields kilometers away.
- Fiber Optic Sensing: Applied in DAS (Distributed Acoustic Sensing) or DTS (Distributed Temperature Sensing) systems to detect extremely weak Rayleigh or Brillouin scattering signals within optical fibers, used for oil pipeline monitoring or perimeter security.
- Spectroscopy & OCT Imaging: As the standard receiver for Swept-Source OCT systems, balanced detectors reconstruct the deep microstructures of biological tissues through interference signals, offering medical imaging with deeper penetration than traditional microscopy.
Technical Specifications
Structural Dimension Diagram
Serivce & Support
Explore Series
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