Yuntao Bai, Xin Ding, Guoxin Jiang, Peng Lei, Ying Xie, Jiangeng Du, Yang Sun, Liang Wu, Guizhong Zhang, Jianquan Yao, "Performance enhancement in the long-wavelength low-gain region of Ti:sapphire lasers by an efficient stimulated Raman scattering process," High Power Laser Sci. Eng. 12, 06000e71 (2024)
- High Power Laser Science and Engineering
- Vol. 12, Issue 6, 06000e71 (2024)
Fig. 1. Schematic of the high-performance high-gain-band Ti:sapphire intracavity Raman laser operating in the 930–1000 nm low-gain region of the Ti:sapphire laser.
Fig. 2. (a) Pulse establishment of the Ti:sapphire Raman laser. (b) Simulated Stokes power transfer for various OC reflectivities.
Fig. 3. Maximum output powers of the narrow-linewidth Ti:sapphire and Raman lasers with various OC reflectivities.
Fig. 4. Power transfer and conversion efficiency at 800 nm. Inset: measured fine spectrum, pulse duration and beam quality at 10.55 W.
Fig. 5. Maximum output power at 700–970 nm for various OC transmittances.
Fig. 6. Power transfer of first- and second-order Stokes waves for various OC transmittances.
Fig. 7. Measured fine spectrum of Stokes waves with OC transmittance of 30%.
Fig. 8. (a) Power transfer and conversion efficiency of first-order Stokes wave with OC transmittance of 60%. (b) Measured fine spectrum of Stokes waves of the E//Nm axis.
Fig. 9. (a) Power transfer and (b) conversion efficiency of the Stokes outputs with various OC transmittances.
Fig. 10. Mode-locked modulations of the (a) first-order Stokes pulses (3.24 W), (b) second-order Stokes pulses (0.39 W) and (c) first-order Stokes pulses (near threshold).
Fig. 11. Beam quality at the maximum output powers of 960 and 1036.5 nm with an OC transmittance of 40%.
Fig. 12. Stability of the first-order Stokes output power at 960 nm within 1 h with an OC transmittance of 40%. Inset: power stability within 10 min.
Fig. 13. (a) Maximum output powers and fine spectra of the first-order Stokes wave at 900–1000 nm. (b) Fine spectrum of the second-order Stokes wave at 1083.7 nm.
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Table 1. Coatings of mirrors.
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