All-optoelectronic continuous wave THz imaging for biomedical applications

Phys Med Biol. 2002 Nov 7;47(21):3743-8. doi: 10.1088/0031-9155/47/21/310.

Abstract

We present an all-optoelectronic THz imaging system for ex vivo biomedical applications based on photomixing of two continuous-wave laser beams using photoconductive antennas. The application of hyperboloidal lenses is discussed. They allow for f-numbers less than 1/2 permitting better focusing and higher spatial resolution compared to off-axis paraboloidal mirrors whose f-numbers for practical reasons must be larger than 1/2. For a specific histological sample, an analysis of image noise is discussed.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Biotechnology / instrumentation
  • Biotechnology / methods
  • Diagnostic Imaging / instrumentation*
  • Diagnostic Imaging / methods
  • Dogs
  • Electromagnetic Phenomena / instrumentation
  • Electronics, Medical
  • Equipment Design
  • Equipment Failure Analysis
  • Lasers*
  • Microwaves
  • Neoplasms, Basal Cell / diagnosis*
  • Optics and Photonics / instrumentation
  • Semiconductors
  • Sensitivity and Specificity
  • Skin Neoplasms / diagnosis*
  • Spectrophotometry / instrumentation*
  • Spectrophotometry / methods
  • Stochastic Processes