Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2015 Jan 13;5:7738. doi: 10.1038/srep07738

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2015, Macmillan Publishers Limited. All rights reserved

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/

PMC Copyright notice

(a) Photograph of the experimental setup used for measuring the focusing performance of the developed HRAs: (1) – THz BWO, (2) – beam forming lens, (3) – chopper, (4) – wire grid polarizer, (5) – HRA (fixed to the optical holder), (6) – 2D raster scanner, (7) – pyroelectric detector. (b) Magnified photo of the pyro-detector mounted on the carrying metallic frame.