Mechanical characterization of planar springs for compact radiation pressure power meters

Published

September 7, 2018

Author(s)

Alexandra B. Artusio-Glimpse, Ivan Ryger, Paul A. Williams, Kyle A. Rogers, Daniel W. Rahn, Andrew J. Walowitz, John H. Lehman

Abstract

Counter to conventional methods of measuring laser optical power, radiation pressure-based power meters operate by reflection rather than absorption. This provides an opportunity for in situ, non-destructive total beam power measurement. Compact radiation pressure power meters designed to operate between a few tens and a few thousands of watts consist of a planar millimeter-scale spring-electrode-mirror component that deflects under radiation pressure from an incident beam. Spring constant, resonant frequency, and quality factor of microfabricated springs as well as coating-induced straining of the spring are the focus of this manuscript. We compare finite element models of the mechanical component with various measurements to inform future designs.

Proceedings Title

SPIE Optics and Photonics 2018: Nanoscience and Nanoengineering

Conference Dates

August 19-23, 2018

Conference Location

San Diego, CA

Conference Title

SPIE Optics and Photonics

Pub Type

Conferences

Download Paper

Local Download

Keywords

radiation pressure, spring constant, metrology, power meter, resonant frequency, film stress, high reflectivity

Citation

Artusio-Glimpse, A. , Ryger, I. , Williams, P. , Rogers, K. , Rahn, D. , Walowitz, A. and Lehman, J. (2018), Mechanical characterization of planar springs for compact radiation pressure power meters, SPIE Optics and Photonics 2018: Nanoscience and Nanoengineering, San Diego, CA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=926397 (Accessed December 14, 2024)