Consolino, Luigi, Saverio Bartalini, and Paolo De Natale. “Characterization of THz Quantum-Cascade Laser Based on Difference-Frequency Generation”. Il Colle di Galileo 7, no. 1 (April 12, 2018): 27–31. Accessed April 16, 2024. https://oajournals.fupress.net/index.php/cdg/article/view/8731.