The FieldMaxII™ laser power and energy meter from Coherent® functions with a broad range of EnergyMax™ sensors enabling laser pulse energy measurement over a broad range of wavelengths, repetition rates, pulse energies and beam diameters. EnergyMax™ sensors are highly linear in terms of repetition rate, laser pulse width, and measured energy. They are also accurate across a broad range of wavelengths due to onboard wavelength compensation. In addition, automatic temperature compensation accounts for changes in ambient temperature, as well as for heat generated by absorption of the laser energy. The included software provides an easy and convenient way to monitor and control multiple meters from a single computer as well as allows the user to log and manipulate measurement data. Complete system requires the FieldMaxII™ meter and an EnergyMax™ sensor.

In addition to EnergyMax™ sensors, the FieldMaxII™ is also compatible with all Coherent® High Power Laser Power Meter detector heads


FieldMaxII™ Energy Meter Specifications
Measurement Resolution 0.1% of full-scale
Accuracy
Digital Meter ±1.0% ±2 LSD
Analog Output ±1.0%
Display 58mm x 78mm, fixed segment LCD w/backlight
Statistics Mean, max., min., standard deviation
Computer Interface USB 2.0/1.1
Analog Output 0 to 1,2 or 5V DC (selectable)
Battery Rechargeable NiMH Battery Pack
Detector Head Specifications
Stock No. #66-278#66-279#66-280#66-281
Type of Sensor Nd:YAG Multipurpose Multipurpose Multipurpose
Energy Range 1.50mJ to 3J 25μJ to 50mJ 10μJ to 20mJ 300nJ to 600μJ
Noise Equivalent Energy <50μJ <1μJ <0.5μJ <20μJ
Active Area Diameter 50mm 25mm 10mm
Maximum Average Power 20W 5W 4W
Wavelength 266nm - 2.1μm 190nm - 12μm
Maximum Repitition Rate (pps) 50 300
Calibration Wavelength (nm) 1064nm
Calibration Uncertainty ±2%
Energy Linearity ±3%
Maximum Energy Density
1064nm @ 10ns 14J/cm2 500J/cm2 500J/cm2 500J/cm2
532nm @ 10ns 2.8J/cm2 — — —
355nm @ 10ns 0.75J/cm2 — — —
266nm @ 10ns 1.0J/cm2 — — —