EOL Seminar: Planar Nanotube-Based Radiometers for Space and Telecommunications

Date: 
Tuesday, April 24, 2018 - 15:30 to 16:30
Location: 
FL2 - 1022
Contact Name: 
Diane Sierra
Contact Email: 
Contact Phone: 
303-497-8746

John H. Lehman
NIST, Sources and Detectors Group


The primary standards for optical power measurements at NIST and other National Metrology Institutes in the world are based on thermal detectors and the principle of electrical substitution. Traceability is realized through electrical measurements and the SI by way of the volt and ohm. We have recently demonstrated that we can achieve small, fast, accurate and extremely efficient and broadband radiometers based on micromachined silicon and vertically aligned carbon nanotubes. These chipscale radiometers embody all the essential elements of an absolute radiometer on a single chip. The application for these radiometers ranges from optical fiber power meter calibrations, laser-power measurements, and space-based solar irradiance and solar spectral irradiance.

Tuesday, 24 April 2018, 2:30 PM
Refreshments 2:15 PM
NCAR-Foothills Laboratory • 3450 Mitchell Lane
Bldg 2 Large Auditorium (Rm1022)
Webcast: https://ucarconnect.ucar.edu/live (Room 2: FL2-1022)