Work

Single-cycle terahertz pulses with amplitudes exceeding 1 MV/cm generated by optical rectification in LiNbO3

Year: 2011

Type: article

Abstract: Using the tilted-pump-pulse-front scheme, we generate single-cycle terahertz (THz) pulses by optical rectification of femtosecond laser pulses in LiNbO3. In our THz generation setup, the condition that the image of the grating coincides with the tilted-optical-pulse front is fulfilled to obtain optimal THz beam characteristics and pump-to-THz conversion efficiency. By using an uncooled microbolometer-array THz camera, it is found that the THz beam leaving the output face of the LN crystal can be regarded as a collimated rather than point source. The designed focusing geometry enables tight focus of the collimated THz beam with a spot size close to the diffraction limit, and the maximum THz electric field of 1.2 MV/cm is obtained.

Source: Applied Physics Letters

DOI: 10.1063/1.3560062

Authors: H. Hirori, A. Doi, F. Blanchard, K. Tanaka

Institutions: Kyoto University, Japan Science and Technology Agency, Institute for Integrated Cell-Material Sciences, Kyoto University, Olympus (Japan)

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: bronze

Funders: Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science

Awards: テラヘルツ近接場による生細胞の実時間イメージングと分光技術の開発, G6431549094, Exploitation of Organic Electronic Materials of Potential Dynamic Switches for Non-equilibrium Condensed Matter Sciences, Elucidation and coherent control of excitonic states of carbon nanotubes