English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Broadband and tunable time-resolved THz system using argon-filled hollow-core photonic crystal fiber

MPS-Authors
/persons/resource/persons201209

Tani,  Francesco
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Max Planck Centre for Extreme and Quantum Optics;

/persons/resource/persons201143

Novoa,  David
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Max Planck Centre for Extreme and Quantum Optics;

/persons/resource/persons201171

Russell,  Philip St. J.
Russell Division, Max Planck Institute for the Science of Light, Max Planck Society;
Max Planck Centre for Extreme and Quantum Optics;

Locator
There are no locators available
Fulltext (public)

1.5043270.pdf
(Publisher version), 571KB

Supplementary Material (public)
There is no public supplementary material available
Citation

Cui, W., Schiff-Kearn, A. W., Zhang, E., Couture, N., Tani, F., Novoa, D., et al. (2018). Broadband and tunable time-resolved THz system using argon-filled hollow-core photonic crystal fiber. APL Photonics, 3: 111301. doi:10.1063/1.5043270.


Cite as: http://hdl.handle.net/21.11116/0000-0002-B685-A
Abstract
We demonstrate broadband, frequency-tunable, phase-locked terahertz (THz) generation and detection based on difference frequency mixing of temporally and spectrally structured near-infrared (NIR) pulses. The pulses are prepared in a gas-filled hollow-core photonic crystal fiber (HC-PCF), whose linear and nonlinear optical properties can be adjusted by tuning the gas pressure. This permits optimization of both the spectral broadening of the pulses due to self-phase modulation (SPM) and the generated THz spectrum. The properties of the prepared pulses, measured at several different argon gas pressures, agree well with the results of numerical modeling. Using these pulses, we perform difference frequency generation in a standard time-resolved THz scheme. As the argon pressure is gradually increased from 0 to 10 bar, the NIR pulses spectrally broaden from 3.5 to 8.7 THz, while the measured THz bandwidth increases correspondingly from 2.3 to 4.5 THz. At 10 bar, the THz spectrum extends to 6 THz, limited only by the spectral bandwidth of our time-resolved detection scheme. Interestingly, SPM in the HC-PCF produces asymmetric spectral broadening that may be used to enhance the generation of selected THz frequencies. This scheme, based on a HC-PCF pulse shaper, holds great promise for broadband time-domain spectroscopy in the THz, enabling the use of compact and stable ultrafast laser sources with relatively narrow linewidths (<4 THz).