[22a-C301-1~4] 4.6 Terahertz Photonics

10:30 〜 10:45英語発表

[22a-C301-3] Variety of Stokes Beam Generation from Slant-Stripe-Type Periodically Poled Lithium Niobate

〇Deepika Yadav¹, Yuma Takida¹, Joselito E. Muldera¹, Hiroaki Minamide¹ (1.RIKEN)

キーワード：

Terahertz Photonics、Non linear crystals

Periodically Poled Lithium Niobate (PPLN) has emerged as a versatile and efficient material for the generation of terahertz (THz)-wave radiation. By making use of its excellent nonlinear optical properties and tailored periodically poled structure for quasi-collinear phase matching (QCPM), a new backward THz-wave parametric oscillator (BW-TPO) was previously realized in a compact, cavity-less setup. In this work, we further harness the properties of slant-stripe-type PPLN crystal and show multiple Stokes beam generation at THz frequencies in the backward (0.45 THz), forward (1.2 THz), and transverse directions (2 THz). The observed frequencies can be easily tuned by rotating the PPLN as well as by changing the PPLN design parameters (poling period and slant angle), making this a promising source of THz-wave radiation for a variety of applications.