The Newport 407A is a portable laser optical power meter designed for precise power measurement across ultraviolet to infrared wavelengths. Built around a thermopile detector, it delivers linear response across nearly four decades of dynamic range—from milliwatts to over 20 W continuous operation, with intermittent capability to 30 W. The instrument handles average power densities to 20 kW/cm² without degradation, making it suitable for high-intensity laser characterization.
Technical Specifications
Power Measurement Range: Milliwatts to >20 W continuous; 30 W intermittent
Wavelength Coverage: 250 nm (specified); UV to IR with upper limit of 11 µm
Detector Absorptance: ±1% variation across 400 nm to 1000 nm
Maximum Power Density: 20 kW/cm² (average)
Dynamic Range: Nearly four decades
Response Time: <0.5 sec (1 W scale and higher); 60 hours runtime on full charge; 14–16 hour recharge time. AC power supply/charger included: 90–132 VAC, 50–60 Hz (Model 407A-1); 198–264 VAC, 50 Hz (Model 407A-2)
– Key Features
• Zero adjustment via 10-turn potentiometer for precise calibration
• Selectable measurement ranges via dedicated switch
• Excellent spatial uniformity across detector aperture
• Linear response maintained to 30 W with no significant loss
• Battery-powered portability for field and laboratory deployment
• Direct analog readout without requiring external equipment
– Typical Applications
UV laser characterization, broadband power monitoring, laboratory measurements, field service diagnostics, and systems requiring simultaneously high sensitivity and high-power handling.
– Compatibility & Integration
External signal output enables real-time data logging via oscilloscope, strip chart recorder, or analog-to-digital conversion hardware.
