Figure 4
From: A Stable Dual-wavelength Thulium-doped Fiber Laser at 1.9 μm Using Photonic Crystal Fiber
(a–d) Image captured by Electrophysics Micron Viewer Model 7290A for four different polarization states variations via a PC while a SLM laser source launched in the wavelength of 1850 nm. (a-1), (a-2), (b-1), (b-2), (c-1), (c-2), (d-1) and (d-2) are the modelling results field profiles for the fundamental quasi-TM modes corresponding to the experimental results for the modes m = 10, 11, 0 and 16 respectively.
