Laser driven terahertz generation in hot plasma with step density profile

Journal Article · Mon Jun 15 00:00:00 EDT 2015 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4922675· OSTI ID:22410450

Kumar, Manoj; Jeong, Young Uk ^[1]; Tripathi, Vipin Kumar ^[2]

---

1. Center for Quantum-Beam-based Radiation Research, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of)
2. Department of Physics, Indian Institute of Technology Delhi, New Delhi 110016 (India)

An analytical formalism of terahertz (THz) radiation generation by beating of two lasers in a hot plasma with step density profile is developed. The lasers propagate obliquely to plasma surface normal, and the nonlinearity arises through the ponderomotive force. The THz is emitted in the specular reflection direction, and the yield is enhanced due to coupling with the Langmuir wave when the plasma frequency is close to THz frequency. The power conversion efficiency maximizes at an optimum angle of incidence.

• OSTI ID: 22410450
• Journal Information: Physics of Plasmas, Vol. 22, Issue 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANALYTIC FUNCTIONS
EFFICIENCY
ENERGY CONVERSION
HOT PLASMA
INCIDENCE ANGLE
LANGMUIR FREQUENCY
LASERS
NONLINEAR PROBLEMS
PLASMA DENSITY
PONDEROMOTIVE FORCE
REFLECTION
THZ RANGE