100-Hz-Linewidth, Tunable Terahertz-Wave Generation Using Two Mutually Injected Semiconductor Lasers

• Published in: Journal of lightwave technology Vol. 43; no. 14; pp. 6452 - 6459
• Main Authors: Tseng, Chin-Hao, Hung, Yung-Jr, Hwang, Sheng-Kwang
• Format: Journal Article
• Language: English
• Published: IEEE 15.07.2025
• Subjects: Communication; Laser stability; Masers; mutual injection; nonlinear dynamics; Optical attenuators; Optical coupling; Optical feedback; Optical fibers; Optical mixing; Photonics; semiconductor laser; Semiconductor lasers; Terahertz communications; terahertz wave

This study experimentally investigates the generation of terahertz (THz) waves with high spectral purity and wide frequency tunability using two mutually injected semiconductor lasers with highly asymmetric injection strength. A simple system architecture is proposed, where only one optical injectio...