3 papers
physics.optics2026
Broadband Second Harmonic Generation using Fixed-Period Periodically Poled Lithium Niobate
Yongjoo Kim, Yijia Cai, Zhixin Liu
Periodically poled lithium niobate (PPLN) is a widely used nonlinear optical device for second harmonic generation (SHG). Despite its wide adoption in commercial systems, its bandw…
physics.optics2025
Impact of nonlinear spectral broadening on the phase noise properties of electro-optic frequency comb
Aleksandr Razumov, Yijia Cai, Jasper Riebesehl +5
Electro-optic modulation is an attractive approach for generating flat, stable, and low-noise optical frequency combs with relatively high power per comb line. However, a key limit…
physics.optics2025
Spacing and Wavelength Tunable Frequency Comb
Yijia Cai, Zhixin Liu
Optical frequency combs are increasingly used in applications such as optical communications, radio signal processing, and dual-comb spectroscopy. Many of these applications requir…