The MKS Instruments Newport 1835-C is a high-performance optical meter engineered for precise optical power and energy measurements across laboratory and industrial environments. It measures optical power from 100 fW to 300 W and performs pulsed and integrated energy measurements for both continuous wave and pulsed light sources. The instrument displays results in multiple units—Watts, dBm, dB, Joules, Ergs, Amperes, and Volts—and supports DC, peak-to-peak, and pulse measurement modes.
Technical Specifications
• Optical Power Range: 100 fW to 300 W
• Energy Measurement Range: 35 nJ to 1 J
• Display: 6-digit bright vacuum fluorescent display (VFD) with analog bar graph and 10X zoom
• Sampling Rate: Up to 1 kHz
• Data Storage: 2500 data point buffer
• Recallable Configurations: Up to 10 stored
• Wavelength Calibration: 1 nm steps
• Communication: RS-232C and IEEE-488 interfaces
• IEEE-488 Data Throughput: 50–100 Hz
• Trigger Control: Trigger in/out with alarm levels
– Key Features
• Analog and digital filtering with programmable sample rates
• Moving statistics functionality
• Audible beep indicator for pulse arrival
• Multiple measurement units for flexibility across applications
– Detector Compatibility & Integration
The 1835-C operates with three detector families from Newport’s 818 Series:
• Low-Power Detectors (818 Series semiconductor): 100 fW to 2 W across 190 nm to 1800 nm; requires calibration module
• High-Power Detectors (818P/818T thermopile): 10 mW to 300 W across 0.19 µm to 11 µm
• Energy Detectors (818E/818J pyroelectric): 35 nJ to 1 J across 0.19 µm to 20 µm for pulsed sources
RS-232C and IEEE-488 connectivity enable remote control and automated data acquisition in bench and system-integrated configurations.
