Second-order interference of two independent and tunable single-mode continuous-wave lasers

• Published in: Chinese physics B Vol. 25; no. 3; pp. 194 - 199
• Main Author: 刘建彬 卫栋 陈辉 周宇 郑淮斌 高宏 李福利 徐卓
• Format: Journal Article
• Language: English
• Published: 01.03.2016
• Subjects: Diode lasers; Integrals; Interference; Lasers; Photons; Spectra; 二阶; 单模; 双光子干涉; 可调谐; 干扰模式; 独立和; 路径积分理论; 连续波激光器
• ISSN: 1674-1056; 2058-3834; 1741-4199
• DOI: 10.1088/1674-1056/25/3/034203

The second-order temporal interference of two independent single-mode continuous-wave lasers is discussed by em- ploying two-photon interference in Feynman＇s path integral theory. It is concluded that whether the second-order temporal interference pattern can or cannot be retrieved via two-photon coincidence counting rate is dependent on the resolution time of the detection system and the frequency difference between these two lasers. Two identical and tunable single-mode continuous-wave diode lasers are employed to verify the predictions. These studies are helpful to understand the physics of two-photon interference with photons of different spectra.