Abstract
We describe a new four-wave rectification method for the generation of intense, ultrafast terahertz (THz) pulses from gases. The fundamental and second-harmonic output of an amplified Ti:sapphire laser is focused to a peak intensity of ~5x10(14)W/cm (2) . Under these conditions, peak THz fields estimated at 2 kV/cm have been observed; the measured power spectrum peaks near 2 THz. Phase-dependent measurements show that this is a coherent process and is sensitive to the relative phases of the fundamental and second-harmonic pulses. Comparable THz signals have been observed from nitrogen and argon as well as from air.
Keywords
Terahertz radiationOptical rectificationOpticsRectificationLaserUltrashort pulseMaterials scienceArgonTerahertz spectroscopy and technologyHigh harmonic generationSapphireNonlinear opticsPhysicsOptoelectronicsPower (physics)Atomic physics
Affiliated Institutions
Related Publications
High-order harmonic generation using intense femtosecond pulses
Neon gas excited by 800-nm laser pulses (15 mJ, 125 fsec) at an intensity near ${10}^{15}$ W/${\mathrm{cm}}^{2}$ generates harmonics up to 109th order. The appearance of success...
Steering the Nuclear Motion in Singly Ionized Argon Dimers with Mutually Detuned Laser Pulses
We demonstrate that the vibrational nuclear motion of singly ionized argon dimers can be controlled with two ultrashort laser pulses of different wavelengths. In particular, we ...
Towards 6G wireless communication networks: vision, enabling technologies, and new paradigm shifts
The fifth generation (5G) wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized, such as mass con...
Optical electronics in modern communications
1. Electromagnetic Theory 2. The Propagation of Rays and Beams 3. Propagation of Optical Beams in Fibers 4. Optical Resonators 5. Interaction of Radiation and Atomic Systems 6. ...
Surface-enhanced spectroscopy
In 1978 it was discovered, largely through the work of Fleischmann, Van Duyne, Creighton, and their coworkers that molecules adsorbed on specially prepared silver surfaces produ...
Publication Info
- Year
- 2000
- Type
- article
- Volume
- 25
- Issue
- 16
- Pages
- 1210-1210
- Citations
- 1025
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
1025
OpenAlex
Cite This
D. J. Cook,
Robin M. Hochstrasser
(2000).
Intense terahertz pulses by four-wave rectification in air.
Optics Letters
, 25
(16)
, 1210-1210.
https://doi.org/10.1364/ol.25.001210
Identifiers
- DOI
- 10.1364/ol.25.001210