The Molectron EPM1000 is a laboratory instrument that measures laser energy and power for both pulsed and continuous-wave sources. It accepts Molectron pyroelectric, silicon, and PowerMax thermopile probes, enabling measurements across diverse spectral ranges and application requirements.
Technical Specifications
Measurement Capabilities
• Laser energy in Joules
• Laser power in Watts
• Voltage
• Frequency (pulsed lasers only)
Display & Readout
• Large custom four-digit LCD display
• 3½” mirrored analog meter
Triggering
• Peak reading with automatic baseline drift compensation
• External trigger input via 100Ω series resistor, optical coupler, and protective diode
• Internal triggering from incoming laser pulse (minimum 5% of full scale range required)
• Programmable trigger holdoff with 1 ms factory default
Signal Processing
Peak detection searches forward from trigger point; baseline calculation searches backward from trigger point.
Connectivity
• Analog output for external monitoring or recording
• RS-232 via standard 9-pin connector
• IEEE-488 (GPIB) interface
Power
AC powered with ventilation required; specifics detailed in user manual.
– Key Features
• Four distinct operating modes
• Automatic baseline drift compensation eliminates measurement artifacts from slow detector drift
• Internal trigger extraction allows operation without external synchronization when pulse amplitude exceeds 5% full scale
• Trigger holdoff prevents false detections from pulse tails following measurement events
• Dual display formats accommodate both digital precision and analog observation
– Typical Applications
• Pulsed laser characterization and energy quantification
• Continuous-wave laser power monitoring
• Multi-wavelength laser source evaluation via probe selection
• Integration with automated laser systems via GPIB or RS-232 control
– Compatibility & Integration
Full compatibility with Molectron pyroelectric, silicon, and PowerMax thermopile detector probes enables operation across ultraviolet, visible, infrared, and far-infrared spectral regions. RS-232 and IEEE-488 interfaces support direct integration into automated test racks and data acquisition systems.
