COHERENT OPTICAL ARRAY TECHNIQUES.

Abstract

Studies are being conducted to determine the feasibility of a coherent optical array radar system operating at a wavelength of 1.06 microns using neodymium-doped host materials as the active media. An important step in this study is to demonstrate coherent amplification of a laser oscillator signal introduced into two separate Nd:glass amplifiers with subsequent recombination into a single output signal. The experimental configuration for this work is a Mach-Zehnder interferometer having an input beam-splitter with separate paths for the reflected and transmitter beams, each path containing a laser amplifier. The two signals are arranged to recombine at another beam-splitter. Recombination into a single output beam occurs if optical phase lengths of the separated paths are multiples of 2 pi radians. A servo system for automatic interpulse stabilization of the path length difference between the two paths of the Mach-Zehnder has been constructed and tested with excellent results.

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1966
Accession Number
AD0488026

Entities

Organizations

  • Sperry Corporation

Tags

DTIC Thesaurus Topics

  • Amplification
  • Amplifiers
  • Automatic
  • Interferometers
  • Laser Amplifiers
  • Lasers
  • Mach Zehnder Interferometers
  • Materials
  • Neodymium
  • Oscillators
  • Radar
  • Transmitters

Fields of Study

  • Engineering
  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Robotics and Automation.

Technology Areas

  • Directed Energy