We fabricated a terahertz wire-grid polarizer consisting of a micrometer-pitch Al grating on a Si substrate by photolithography and wet etching. The ratio of TM and TE transmittances (extinction ratio) was over $35\mathrm{dB}$ at $0.5\mathrm{THz}$ . At the Brewster angle of the Si substrate, the polarization transmittance of a TM wave through the fabricated polarizer exceeded 95% and the extinction ratio was over $45\mathrm{dB}$ at $\sim 1\mathrm{THz}$ . The fabricated polarizer has a higher extinction ratio than conventional free-standing terahertz wire-grid polarizers.

© 2009 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Fabrication of Thin-Film Micropolarizer Arrays for Visible Imaging Polarimetry (AO)
• Polarization-Multiplexed Diffractive Optical Elements Fabricated by Subwavelength Structures (AO)
• Influence of Dielectric Substrate on the Responsivity of Microstrip Dipole-Antenna-Coupled Infrared Microbolometers (AO)
• Brewster ’s angle attenuator for terahertz pulses (AO)
• High-performance nanowire-grid polarizers (OL)

Related Conference Papers

• All-fiber polarization monitoring and system applications
• A Fabry-Perot Cavity Used as a High-Extinction-Ratio Resonant Polarizer with Application to Quantum Optics Measurements
• Target Detection and Discrimination through Active Multispectral Polarimetric Imaging
• Tapered Gold Helices as High-Extinction-Ratio, Broadband Circular Polarizer
• Metamaterial-Based, Gradient Index Beam Steerer for Terahertz Radiation