1. Lewis R 2019 J. Phys. D Appl. Phys. 52 433001
2. Liang Z Q, Liu Z J, Wang T, Jiang Y D, Zheng X, Huang Z H, Wu X F 2015 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) Hongkong, China, Auguest 23–28, 2015 p1
3. Ding S H, Qi L, Li Y D, Wang Q 2011 Opt. Lett. 36 1993
4. Grant J, Escorcia-Carranza I, Li C, McCrindle I J, Gough J, Cumming D R 2013 Laser Photonics Rev. 7 1043
5. Kolenov I, Nesterov P, Nesterov I, Lukash A, Bezborodov V, Mizrakhy S 2020 IEEE Ukrainian Microwave Week (UkrMW) Kharkiv, Ukraine, September 21–25, 2020 p866