Published January 2016 | Version v1
Journal article Metadata-only

Terahertz emission from two-plasmon-decay induced transient currents in laser-solid interactions

Creators

  • 1. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
  • 2. Collaborative Innovation Center of IFSA (CICIFSA), Shanghai Jiao Tong University, Shanghai 200240 (China)
  • 3. INRS-EMT, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1S2 (Canada)
  • 4. Key Laboratory for Laser Plasmas (MoE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  • 5. SUPA, Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom)

Description

We have studied the generation of terahertz (THz) radiation via the interaction of intense femtosecond laser pulses with solid targets at a small incidence angle. It is found that preplasma with a moderate density gradient can enhance the emission. We also observe saturation of the THz output with the driving laser energy. We find that THz emission is closely related to the 3/2 harmonics of the driving laser. Particle-in-cell simulations indicate that under the present experimental conditions, the THz emission could be attributed to the transient currents at the plasma-vacuum interface, mainly formed by the two-plasmon-decay instability

Additional details

Identifiers

DOI
10.1063/1.4939605;

Publishing Information

Journal Title
Physics of Plasmas
Journal Volume
23
Journal Issue
1
Journal Page Range
p. 013104-013104.5
ISSN
1070-664X
CODEN
PHPAEN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47063973
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Descriptors DEI
COMPUTERIZED SIMULATION; DECAY INSTABILITY; EMISSION; HARMONICS; INCIDENCE ANGLE; INTERFACES; LASER RADIATION; LASER TARGETS; PLASMA; PLASMA DENSITY; PLASMONS; PULSES; SOLIDS; THZ RANGE
Descriptors DEC
ELECTROMAGNETIC RADIATION; FREQUENCY RANGE; INSTABILITY; OSCILLATIONS; PLASMA INSTABILITY; QUASI PARTICLES; RADIATIONS; SIMULATION; TARGETS

Optional Information

Notes
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