John H. Lehman

Publications

Optical-Fiber Power Meter Comparison between NIST and LAMETRO

November 01, 2019

Author(s):

Johnny Jimenez, Maria Ugalde, John H. Lehman, Igor Vayshenker

We describe the results of a comparison of reference standards between the National Institute of Standards and Technology (NIST-USA) and Laboratorio de...

Compact total irradiance monitor: Flight demonstration

August 30, 2019

Author(s):

Dave Harber, John H. Lehman, Nathan A. Tomlin, Christopher S. Yung, Malcolm G. White, Zach Castleman, Ginger Drake, Samuel Van Dreser, Nat Farber, Karl Heurman, Joel Rutkowski, Alan Sims, Jacob Sprunck, Cameron Straatsma, Isaac Wanamaker, Wengang Zheng, Greg Kopp, P. Pilewskie, Michelle S. Stephens

The long-term balance between Earths absorption of solar energy and emission of radiation to space is a fundamental climate measurement. Total solar...

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...