The Newport 843-R is an economical, handheld optical power meter engineered for precise laser power and energy measurements across research, development, and industrial environments. This portable instrument accepts both photodiode and thermopile sensors, delivering measurements spanning picojoules and picowatts through thousands of watts. The ergonomic design features rubberized sides and a kickstand for stable bench operation. A high-legibility TFT display (320 × 240 pixels) presents data as large digital readouts with bar graphs or high-resolution simulated analog needles, with 15 mm numeric display and backlit capability for low-light use.
Technical Specifications
Measurement Capabilities:
• Photodiode: Average power
• Thermopile: Average power, single-shot energy
• Pyroelectric (compatible detectors): Pulse energy at 10 Hz, average power
Measurement Range: pJ and pW to thousands of watts; typical range 10 µW to 20 W with specified detectors
Wavelength Range: 190 nm to 1800 nm (detector dependent); broadband spectrally flat response 0.19 to 11 µm with 919P thermopile sensor
Accuracy: ±0.25% (full scale) ± 20 pA; ±3% of reading with Newport thermopile sensors
Resolution: 18 bits plus sign; 0.1 µW in specific configurations
Sampling Rate: 15 Hz (photodiode/thermopile), 500 Hz (pyroelectric), up to 4 kHz in select configurations
Gain Ranges: 16
Display Refresh: 15 Hz
– Key Features
• Smart connector technology: Automatic sensor configuration and calibration via embedded connector plug data
• Wavelength correction: Automatic correction factor introduction for thermopile-based measurements
• Measurement modes: Single-shot energy, average power, pulse energy
• Multilingual interface: English, Japanese, Chinese, Russian
• USB variant (843-R-USB) with PMManager™ application software for data logging and advanced analysis
– Detector Compatibility
Supported Sensors:
• Photodiode: 918D, 818-xx/DB, 819C/D, 818-MSCOPE, 818-RAD
• Thermopile: 919P, PEPS
• Pyroelectric: 919E, LIAD
Not Compatible: Legacy 818P series thermopile and 818E series pyroelectric sensors
Calibration: Certificate included; 12-month recalibration interval recommended.
