Fig. 1. Schematic diagram of linearly polarized light passing through BRF^[10]

Fig. 2. Transmittance curves for BRF insertion at Brewster angle under different A and d. (a) A=40°, d=0.5 mm; (b) A=40°, d=1 mm; (c) A=40°, d=2 mm; (d) A=30°, d=2 mm; (e) A=50°, d=2 mm; (f) A=60°, d=2 mm

Fig. 3. Transmittance curves for BRF insertion at 0° under different A and d. (a) α=20°, d=0.5 mm; (b) α=50°, d=0.5 mm; (c) α=20°, d=2 mm; (d) α=50°, d=2 mm

Fig. 4. Schematic diagram of experimental setup

Fig. 5. 2D stability image of V-shaped resonator simulated using reZonator software

Fig. 6. Normalized tuned spectrum when LBO is selected as frequency doubling crystal

Fig. 7. Tuned laser power spectra when LBO and BBO are selected as frequency doubling crystals

Fig. 8. Representative frequency doubling laser power curves when LBO and BBO are selected as frequency doubling crystals

Fig. 9. Spectrum of 379.49 nm frequency doubling light

Fig. 10. Normalized tuned spectrum when BBO is selected as frequency doubling crystal

Fig. 11. Spectrum of 381.29 nm frequency doubling light

Fig. 12. Beam quality of frequency doubling laser

Fig. 13. Spectrum of frequency doubling light when BRF is not put into cavity and only LBO is put into cavity