Ultrafast imaging of terahertz Cherenkov waves and transition-like radiation in LiNbO_3 | Zendy

Zhenyou Wang | Zendy; Fuhai Su | Zendy; Frank A. Hegmann | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Ultrafast imaging of terahertz Cherenkov waves and transition-like radiation in LiNbO_3

Author(s) -

Zhenyou Wang,

Fuhai Su,

Frank A. Hegmann

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.008073

Subject(s) - optical rectification , cherenkov radiation , terahertz radiation , optics , femtosecond , laser , ultrashort pulse , materials science , lithium niobate , transition radiation , radiation , optoelectronics , physics , nonlinear optics , detector

We use ultrafast phase-contrast imaging to directly observethe cone-like terahertz (THz) Cherenkov wave generated by optical rectification of femtosecond laser pulses focused into bulk lithium niobate (LiNbO₃) single crystals. The transverse imaging geometry allows the Cherenkov angle, THz wave velocity, and optical pump pulse group velocity to be measured. Furthermore, transition-like THz radiation generated by the femtosecond laser pulse at the air-crystal boundary is observed. The effect of optical pump pulse polarization on the generation of THz Cherenkov waves and transition-like radiation in LiNbO₃ is also investigated.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research