Work

Velocity matching by pulse front tilting for large area THz-pulse generation

Year: 2002

Type: article

Abstract: We propose a generally applicable velocity matching method for THz-pulse generation by optical rectification in the range below the phonon frequency of the nonlinear material. Velocity matching is based on pulse front tilting of the ultrashort excitation pulse and is able to produce a large area THz beam. Tuning of the THz radiation by changing the tilt angle is experimentally demonstrated for a narrow line in the range between 0.8- 0.97 times the phonon frequency. According to model calculations broadband THz radiation can be generated at lower frequencies. Advantages of the new velocity matching technique in comparison to the electro-optic Cherenkov effect and non-collinear beam mixing are discussed.

Source: Optics Express

DOI: 10.1364/oe.10.001161

Authors: Janos Hebling, Gabor Almasi, Ida Kozma, Jurgen Kuhl

Institutions: University of Pecs, Max Planck Institute for Solid State Research

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Hungarian Scientific Research Fund