1. J.E. Townsend, W.L. Barnes, and S.G. Crubb, Electron. Lett. 27, 1958 (1991).
2. S. Gupta, D. Engin, D. Pachowicz, J.-L. Fouron, J. Lander, X. Dang, S. Litvinovitch, T. Chuang, K. Puffenberger, F. Kimpel, R. Utano, and M. Wright, in Proc. SPIE 9739, Free Space Laser Communication and Atmospheric Propagation XXVIII, 97390V (2016)
3. Wu. Zhaohui, S. Yang, H. Chen, M. Chen, and S. Xie, IEEE Photon. Technol. Lett. 29, 409 (2017).
4. G. Canat, J.-C. Mollier, J.-P. Bouzinac, G.M. Williams, B. Cole, L. Goldberg, Y. Jaouën, and G. Kulcsar, J. Opt. Soc. Am. B 22, 2308 (2005).
5. P. Ribeiro, D.L. Andrews, and M. Raposo eds., Optics, Photonics and Laser Technology. (Springer International Publishing, Springer Nature Switzerland , 2017).