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Radiation Pressure assessment of high power laser emittance


Physical Measurement Laboratory, Applied Physics Division

RO# Location
50.68.62.B7583 Boulder, CO

Please note: This Agency only participates in the February and August reviews.


Name E-mail Phone
Williams, Paul A. 303.497.3805


High power lasers above a few kilowatts average power are becoming more practical with uses in manufacturing (welding, cutting, and marking) and defense applications. Traditional means of accurately measuring the emitted power from such lasers are based on thermal techniques (e.g., thermopiles, calorimeters), which are inherently slow and cumbersome. However, at these high laser powers, another approach to laser power measurement becomes feasible--radiation pressure. Laser light incident on a mirror will deliver a force which is proportional to the power in the laser. Appropriately-designed high accuracy force scales can allow in-situ measurement of laser power with faster response times. Research into this field is ongoing.


Radiation pressure; High-power laser; Laser energy; CO2 lasers; Laser manufacturing; Laser welding; Laser cutting;


Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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