All Solid-State Photomixing THZ Transmitter
Abstract
The goal of this project was to explore THz technologies for wider bandwidth communications and sensing for DoD systems. More specifically the objective was to develop solid state THz sources for operation in the range between 0.3 to 10 (1 millimeter to 30 micrometer) mainly for aerospace communications and atmospheric sensing; and potentially, short-range terrestrial and airborne communications and near-object analysis. The focus was on all solid-state high efficiency, high power, directional sources or emitters. This report describes the recent advances in a type of sweep oscillator based on photonic mixing that has the greatest tuning range of any known coherent source in the THz region, and has the additional benefits of being all solid-state and operating without any cryogens, high voltages, or large magnetic fields. This sweep oscillator was designed to cover two full decades of tenability all under electronic (laptop computer) control. And, it does so with semiconductor-based pump lasers and a simple room-temperature direct detector (Golay cell). Applications of the photomixing sweep oscillator (THz spectroscopy of materials) under "STP" (standard temperature and pressure) conditions are also discussed in this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2005
- Accession Number
- ADA436113
Entities
People
- Elliot R. Brown
- Marie A. Celis
Organizations
- University of California, Los Angeles