[9a-N204-1~8] 4.6 Terahertz Photonics

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)English Presentation

[9a-N204-1] Measurement of Terahertz Wave Intensity Inside a LiNbO₃ Crystal for a Terahertz Parametric Generator Using Probe Beam Incident from the Z-surface

〇Akitoshi Niidome¹, Sota Mine^1,2, Kodo Kawase¹, Kosuke Murate¹ (1.Nagoya Univ., 2.RIKEN)

Keywords:

terahertz,parametric

The injection-seeded terahertz (THz)-wave parametric generator is a high-intensity, single-frequency THz-wave source with wide frequency tunability from 0.4 to 5.0 THz. Although previous studies have simulated the generation and intensity distribution of THz-waves inside lithium niobate crystals, detailed observations of the THz-wave amplification process have been rarely reported. In this study, the probe beam was injected from the Z-surface of the crystal, and the detection Stokes beam was measured using a near-infrared camera. As a result, THz parametric fluorescence was successfully observed. This result suggests that the spatial distribution of THz-waves in the xy-plane of the crystal can be measured.