Miniaturized X-ray Generation by Pyroelectric Effect using Short Pulse Laser

Abstract

Ferroelectric crystals such as LiNbO3 (LN) and LiTaO3 (LT) are currently used as infrared sensors, electro-optical devices, nonlinear optical devices, X-ray generators, neutron generators, and tabletop nuclear fusion systems. We demonstrated fundamental measurements of pyroelectric current and surface charges accumulated by temperature change using ordinary heater, Pertier device and CO2 gas laser. Based on results, we shifted our target to surface potential caused by photogalvanic effect. We demonstrated photo-induced currents under a visible wavelength laser. The photogalvanic current was superior to the pyroelectric one under such conditions.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 2011
Accession Number
ADA553195

Entities

People

  • Kenji Kitamura

Organizations

  • National Institute for Materials Science

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Climate Change
  • Crystal Lattices
  • Crystals
  • Electric Fields
  • Electromagnetic Fields
  • Electron Energy
  • Electrons
  • Energy
  • Ferroelectric Crystals
  • Gas Lasers
  • Generators
  • Laser Beams
  • Lasers
  • Materials
  • Materials Science
  • Radiation
  • X Rays

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Plasma Physics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Directed Energy