Edge-Coupled Membrane Terahertz Photonic Transmitters Based on Metal-Semiconductor-Metal Traveling-Wave Photodetectors
Resource
Applied Physics Letters 81 (27): 5108-5110
Journal
Applied Physics Letters
Journal Volume
81
Journal Issue
27
Pages
5108-5110
Date Issued
2002
Date
2002
Author(s)
Abstract
Ultra-high-speed photodetectors and printed-circuit antennas construct photonic transmitters. In this letter, we demonstrate a terahertz (THz) photonic transmitter: edge-coupled membrane photonic transmitters based on metal–semiconductor–metal traveling-wave photodetectors, which are fabricated with low-temperature-grown GaAs photoabsorption layers. With a membrane-based and edge-coupled structure, the demonstrated photonic transmitters can eliminate the requirement of Si lenses and attain an over 20 times higher optical-to-THz power conversion efficiency 2×10−4 than vertical illuminated photonic transmitters with Si lenses at the same operation frequency.
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Type
journal article
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