Author Affiliations
1Chinese Academy of Sciences, GBA branch of Aerospace Information Research Institute, Guangzhou, China2University of Chinese Academy of Sciences, Beijing, Chinashow less
Fig. 1. Experimental setup of the 193-nm laser system. SHG, second-harmonic generation; FHG, fourth-harmonic generation; SFG, sum frequency generation; DM1, AR@515 nm/HR@258 nm dichroic mirror; DM2: HR@258 nm/AR@1553 nm dichroic mirror.
Fig. 2. Experimental setup of the 1030 nm Yb-hybrid pulsed laser. AOM, acoustic-optics modulator; ISO, isolator; PCF, photonic crystal fiber; PBS, polarization beam splitter; QW, quarter-wave plate.
Fig. 3. (a) Output power versus pump power in the Yb:YAG bulk crystal amplifier with single-pass and double-pass configurations; (b) the beam profiles of the 1030-nm laser output at 14.6 W of Yb:YAG bulk crystal.
Fig. 4. Output average powers of (a) 515-nm laser and (b) 258-nm laser as the function of pump average powers of 1030 and 515 nm lasers, respectively.
Fig. 5. Output average powers of (a) 221-nm laser and (b) 193-nm laser generated from the first and second SFG in LBO crystal as a function of pump average powers of 258 and 221 nm lasers, respectively.
Fig. 6. (a) Pulse duration of the generated 193 nm laser. Inset: Beam profile of the 193-nm laser. Measured beam profiles of (b) the 258-nm laser and (c) the 221-nm laser.
Fig. 7. Power stability of the free-running 193-nm laser within 1500 s.
| Walk-off angle (mrad) | (pm/V) | Angular acceptance (mrad·cm) | BBO | 110.60 | 2.400 | 0.10 | CLBO | 38.95 | 0.992 | 0.32 | LBO | 10.87 | 0.254 | 1.05 |
|
Table 1. Optical properties of BBO, CLBO, and LBO at 193 nm (1553.3 + 220.9 nm->193.4 nm, type I).