Yongguang Zhao, Li Wang, Weidong Chen, Pavel Loiko, Xavier Mateos, Xiaodong Xu, Ying Liu, Deyuan Shen, Zhengping Wang, Xinguang Xu, Uwe Griebner, Valentin Petrov, "Structured laser beams: toward 2-μm femtosecond laser vortices," Photonics Res. 9, 357 (2021)

Search by keywords or author
- Photonics Research
- Vol. 9, Issue 3, 357 (2021)

Fig. 1. Schematic of the passively mode-locked femtosecond TEM 00 and HG 10 laser using collinear and off-axis pumping (BM, bending mirror; L, lens; CM1–CM3, chirped mirrors; OC, output coupler).

Fig. 2. (a) Optical spectra and (b), (c) interferometric autocorrelation traces of the mode-locked Tm:LuYO 3 ceramic laser operating in TEM 00 and HG 10 modes. Insets of (b) and (c) show the corresponding far-field beam patterns (fs, femtosecond).

Fig. 3. (a) Schematic of the SCL mode converter, and the recorded far-field (b), (e) HG 10 and (c), (d), (f), (g) LG 0 , ± 1 beam patterns as the mode-locked laser operated in the first (middle row) and second (bottom row) femtosecond regimes (l , topological charge).

Fig. 4. (a) Optical spectrum of the generated LG 0 , + 1 modes and the corresponding interferometric autocorrelation traces in the (b) first and (c) second femtosecond regimes; (d) and (e) are the RF spectra of the femtosecond (112 fs) LG 0 , + 1 beam in different span ranges. The inset in (c) shows the noncollinear autocorrelation trace recorded on a long time scale (RBW, resolution bandwidth).

Set citation alerts for the article
Please enter your email address