Lens coupler and magnetic field terahertz emission enhancement in InSb and InAs under 1.55-μm excitation

College

College of Science

Department/Unit

Physics

Document Type

Article

Source Title

Japanese Journal of Applied Physics

Volume

52

Issue

3 PART 1

Publication Date

3-1-2013

Abstract

Terahertz (THz) emission from InSb and InAs utilizing an MgO lens coupler in conjunction with an applied magnetic field is reported. A THz peak amplitude enhancement of 74 times in InSb compared to 26 times in InAs was observed. The considerable enhancement in InSb is attributed to its large Hall angle, small THz divergence and reduced total internal reflection. A corresponding emission shift to lower THz frequencies in both samples was observed due to the spectral dependence of the MgO lens' collection efficiency. This enhancement configuration is easily applicable in the design of a compact THz time-domain spectroscopy system. © 2013 The Japan Society of Applied Physics.

html

Digitial Object Identifier (DOI)

10.7567/JJAP.52.032201

Keywords

Terahertz spectroscopy; Magnetic fields; Magnesium oxide; Refractive index

Upload File

wf_yes

This document is currently not available here.

Share

COinS