Accession Number:

ADP011787

Title:

High Duty Cycle Germanium Lasers and Continuous Terahertz Emission from Germanium

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB

Report Date:

2000-09-29

Pagination or Media Count:

4.0

Abstract:

We have measured laser emission from beryllium-doped germanium crystals with small inter-contact distances. An improved heat sink allowed a two-fold increase of the laser duty cycle to 5. Non-thermal terahertz emission was found for conventional, continuously excited beryllium-doped germanium crystals with a volume of 0.5 cu mm. Experimental and theoretical investigations of germanium lasers headed for continuous wave operation will be discussed. Major emphasis is placed on the electric field uniformity. We present experimental results of lasers utilizing a planar contact geometry. A planar laser structure with a thin active layer seems to be a very good candidate for a high power and continuous wave terahertz laser.

Subject Categories:

  • Lasers and Masers
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE