Accession Number:

ADA612921

Title:

Thermal Conductivity Measurement Setup for Low Temperature Characterization of Laser Materials

Descriptive Note:

Final rept. Mar 2014-Mar 2015

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE

Report Date:

2014-09-01

Pagination or Media Count:

22.0

Abstract:

We have developed a setup for accurately measuring the thermal conductivity of solid dielectric samples in the temperature range of 20 350 K. This setup makes use of a cryogenic refrigerator and several custom fixtures that together allow for fine temperature control and low thermal losses across the sample. Initial benchmark measurements of an undoped single-crystal yttrium aluminum garnet YAG sample show good agreement with literature from cryogenic to room temperature. We present thermal conductivity results for a series of ceramic yttria samples with varying erbium Er concentration. These results show the expected trend of decreased thermal conductivity with increased dopant content

Subject Categories:

  • Lasers and Masers
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE