technology energy and power meters Power play stephen mounsey rounds up the latest energy and power meters for use with lasers
artifex engineering has introduced its OPM150, a versatile power monitor for use in the lab and for laser servicing as well as for OEM applications. Heads for the monitor are available for wavelength ranges at 190 to 1,100nm, 800 to 1,550nm, 800 to 1,650nm and 400 to 1,600nm. Each head is automatically recognised and its individual calibration data is uploaded to the system. In addition, the user may load up to five separate filter curves. Thus the dynamic range and functionality of the unit can be expanded while ensuring proper calibration. The monitor features an update rate of 30Hz when using a GUI, or 1,000Hz when used as a data logger, and five gain ranges from 1µW to 10mW full scale (<1nW resolution).
use as a virtual COM-port. The company provides a software development kit including the source code for the GUI application.
www.artifex-engineering.com
laser components offers its Wavepower device for measuring both the wavelength and output power of low power lasers. The device
The graphical user interface is intuitive to use and easy to read. The software includes a scope function, data logging and a large, digital display – perfect for daily use in the lab or in the field. Further functions such as auto- gain and various storage formats are also included.
The OPM150 is pocket-size and is powered and controlled over a single USB cable. The unit comes delivered with drivers for direct communication or for
24 electro optics l MARCH 2011
complements the company’s laser diode modules by providing a wavelength measurement range of 500 to 900nm and a power measurement capability of between 10µW and 100mW. For laser power measurement at higher power levels, the company’s Quick Power Meter (QPM) product line consists of six models covering the 2W to 10kW power range – fully automatic, broadband (0.25- 11µm) handheld power meters. On the low- to mid-range units (up to 500W) the low-profile thermopile sensor head is connected to the display body by a flexible cord, allowing for remote sensing even in tight spaces.
www.lasercomponents.co.uk
ophir photonics has introduced the 3A-P-THz THz power/energy sensor, designed to measure THz light sources from very low power to very high power, up
www.electrooptics.com
to 3W – 30x the power levels of competing products. In addition, it is the only power/energy sensor on the market that is traceable to standard laboratory calibration. As a standard sensor head, the 3A-P-THz is less expensive than traditional systems and is compatible with all Ophir meters and PC interfaces.
The 3A-P-THz measures short pulse or CW lasers in the 0.1 to 10THz wavelength range. The sensor’s p-type absorber provides a larger aperture and flatter spectral response than most similar devices, maximising performance across the entire
Coherent has expanded its range of laser energy measurement products with its new ‘meterless’ range of EnergyMax sensors. Incorporating state-of-the-art miniaturisation technology found in the company’s successful PowerMax sensors, EnergyMax meterless sensors eliminate
spectral range. Optical power can be measured from 60µW to 3W, and energy from 20µJ to 2J. The 3A-P-THz power/energy sensor works with all Ophir smart displays or PC interfaces, including the Orion PE, Nova, Nova II, Vega, LaserStar, USBI, Pulsar, and Quasar. Each display features a ‘Smart Connector’ interface that automatically configures and calibrates the display when plugged into one of the company's measurement heads.
The 3A-P-THz is distributed
in Europe by BFi Optilas.
www.ophiropt.com
the need for an external meter, allowing the user to monitor laser energy using a PC. The sensors provide plug-and-play system integration for pulsed lasers with repetition rates of up to 10kHz, while also offering cost-savings over traditional meter-plus-sensor systems.
www.coherent.com/meterless
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