John H. Lehman

Publications

BABAR: Black Array of Broadband Absolute Radiometers for far infrared sensing

May 13, 2019

Author(s):

Christopher S. Yung, Nathan A. Tomlin, Cameron Straatsma, Joel Rutkowski, Erik Richard, Dave Harber, John H. Lehman, Michelle S. Stephens

Currently at NIST, there is an effort to develop a black array of broadband absolute radiometers (BABAR) for far infrared sensing. The linear array of...

Inline Laser Power Measurement by Photon Momentum

February 06, 2019

Author(s):

John H. Lehman, Paul A. Williams, Daniel W. Rahn, Kyle A. Rogers

We present a measurement scheme and instrumentation for quantifying laser power by means of photon momentum. The optical design is optimized such that the...

Radiation-Pressure Enabled Traceable Laser Sources at High CW Powers

January 04, 2019

Author(s):

Paul A. Williams, Alexandra B. Artusio-Glimpse, Joshua A. Hadler, Daniel King, Ivan Ryger, Tam Vo, John H. Lehman, Kyle A. Rogers

Radiation pressure has recently been shown to have practical application for multi-kilowatt CW laser power measurement. One key advantage lies in its ability...

Using Radiation Pressure to Develop a Radio-Frequency Power Measurement Technique Traceable to the Redefined SI

October 15, 2018

Author(s):

Christopher L. Holloway, Matthew T. Simons, David R. Novotny, John H. Lehman, Paul A. Williams, Gordon A. Shaw

We discuss a power measurement technique traceable to the International System of Units based on radiation pressure (or radiation force) carried by an...

MEMS non-absorbing electromagnetic power sensor employing the effect of radiation pressure

September 09, 2018

Author(s):

Ivan Ryger, Alexandra B. Artusio-Glimpse, Paul A. Williams, Gordon A. Shaw, Matthew T. Simons, Christopher L. Holloway, John H. Lehman

We demonstrate a compact electromagnetic power sensor based on force effects of electromagnetic radiation onto a highly reflective mirror surface. Unlike the...