Enhancement of terahertz pulse emission by optical nanoantenna

ACS Nano
Sang-Gil ParkKi-Hun Jeong

Abstract

Bridging the gap between ultrashort pulsed optical waves and terahertz (THz) waves, the THz photoconductive antenna (PCA) is a major constituent for the emission or detection of THz waves by diverse optical and electrical methods. However, THz PCA still lacks employment of advanced breakthrough technologies for high-power THz emission. Here, we report the enhancement of THz emission power by incorporating optical nanoantennas with a THz photoconductive antenna. The confinement and concentration of an optical pump beam on a photoconductive substrate can be efficiently achieved with optical nanoantennas over a high-index photoconductive substrate. Both numerical and experimental results clearly demonstrate the enhancement of THz wave emission due to high photocarrier generation at the plasmon resonance of nanoantennas. This work opens up many opportunities for diverse integrated photonic elements on a single PCA at THz and optical frequencies.

References

Nov 28, 2002·Physics in Medicine and Biology·Ruth M WoodwardMichael Pepper
Mar 6, 2003·Nature Materials·Bradley Ferguson, Xi-Cheng Zhang
Mar 6, 2004·Science·T J YenX Zhang
Aug 24, 2004·Nature Materials·Koichi OkamotoAxel Scherer
Nov 19, 2004·Nature·Kanglin Wang, Daniel M Mittleman
Dec 1, 2006·Nature·Hou-Tong ChenRichard D Averitt
Jan 5, 2007·Nature·C Genet, T W Ebbesen
Dec 24, 2008·Optics Express·K R Catchpole, A Polman
Oct 6, 2003·Optics Express·Kodo KawaseHiroyuki Inoue
Feb 20, 2010·Nature Materials·Jon A SchullerMark L Brongersma
Feb 20, 2010·Nature Materials·Harry A Atwater, Albert Polman
Aug 24, 2010·Nano Letters·Jens DorfmüllerKlaus Kern
Jun 1, 2003·Journal of Biological Physics·R M WoodwardM Pepper

❮ Previous
Next ❯

Citations

Nov 23, 2012·Nano Letters·Barmak HeshmatThomas Edward Darcie
Nov 18, 2015·Nano Letters·Afshin JoosheshReuven Gordon
Sep 9, 2015·Scientific Reports·Kiwon MoonKyung Hyun Park
Mar 17, 2016·Scientific Reports·Christopher M CollierJonathan F Holzman
Feb 28, 2013·Nano Letters·Hyeong-Ryeol ParkDai-Sik Kim
May 15, 2013·Optics Express·Saman JafarlouSafieddin Safavi-Naeini
Apr 4, 2015·Optics Express·Abhishek Singh, S S Prabhu
Nov 29, 2012·Optics Express·Sang-Gil ParkKi-Hun Jeong
Nov 18, 2014·Optics Express·Afshin JoosheshReuven Gordon
Nov 13, 2015·Optics Express·Shang-Hua Yang, Mona Jarrahi
Aug 30, 2018·Small·Nezih Tolga Yardimci, Mona Jarrahi
Apr 28, 2018·Scientific Reports·Sergey LepeshovEdik U Rafailov
Dec 6, 2017·AIP Advances·Xurong LiMona Jarrahi
Feb 7, 2019·Scientific Reports·Mohammad BashirpourMohammad Neshat
Apr 15, 2020·Optics Letters·Bahareh Hosseini FakharMohammad Sadegh Abrishamian

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.