THz time-domain spectroscopy beyond 4 THz using a sub-picosecond Yb-doped fiber laser system

Author

Nagai, Masaharu ; Matsubara, Eiichi ; Ashida, M. ; Takayanagi, Jun ; Ohtake, H.

Author_Institution

Grad. Sch. of Eng. Sci., Osaka Univ., Toyonaka, Japan

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

We performed THz pulse generation and detection beyond 4 THz by using a 1.04-μm Yb-doped fiber laser with a pulse duration of 480 fs. Owing to higher-order nonlinear processes in LiNbO₃ crystals, THz pulses can be emitted with a bandwidth extending beyond the excitation pulse limitation. Emitted THz pulses are detected by using a stable sampling pulse that is temporally compressed by an optical fiber.

Keywords

fibre lasers; lithium compounds; microwave photonics; nonlinear optics; optical pulse compression; optical pulse generation; optical pulse shaping; terahertz wave detectors; terahertz wave generation; terahertz wave spectra; ytterbium; LiNbO₃; THz pulse detection; THz pulse generation; THz time-domain spectroscopy; excitation pulse limitation; higher-order nonlinear process; optical fiber; pulse duration; stable sampling pulse compression; subpicosecond Yb-doped fiber laser system; time 480 fs; wavelength 1.04 mum; Bandwidth; Crystals; Laser excitation; Lithium niobate; Optical fiber dispersion; Optical fibers; Surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956314

Filename

6956314