[1] Samanta G K, Ebrahim-Zadeh M. Continuous-wave, single-frequency, solid-state blue source for the 425-489 nm spectral range[J]. Optics Letters, 2008, 33 (11): 1228-1230.
[2] My T H, Drag C, Bretenaker F. Single-frequency and tunable operation of a continuous intracavity-frequency-doubled singly resonant optical parametric oscillator[J]. Optics Letters, 2008, 33(13): 1455-1457.
[3] Devi K, Kumar S C, Ebrahim-Zadeh M. High-power, continuous-wave, single-frequency, all-periodically-poled, near-infrared source[J]. Optics Letters, 2012, 37(24): 5049-5051.
[4] Aadhi A, Chaitanya N A, Singh R P, et al. High-power, continuous-wave, solid-state, single-frequency, tunable source for the ultraviolet[J]. Optics Letters, 2014, 39(12): 3410-3413.
[5] Aadhi A, Chaitanya N A, Jabir M V, et al. All-periodically poled, high-power, continuous-wave, single-frequency tunable UV source single-frequency tunable UV source[J]. Optics Letters, 2015, 40(1): 33-36.
[7] Li Peng, Ma Yayun, Nie Dandan, et al. Continuous-wave single-frequency 1.5 μm laser generated by a singly resonant optical parametric oscillator[J]. Chinese J Lasers, 2014, 41(8): 0802008.
[8] Xing Tinglun, Wang Li, Hu Shuwu, et al. Cavity-linewidth narrowing of 3 μm low threshold MGO∶PPLN-OPO by volume Bragg grating[J]. Chinese J Lasers, 2017, 44(1): 0101006.
[12] Batchko R G, Weise D R, Plettner T, et al. Continuous-wave 532-nm-pumped singly resonant optical parametric oscillator based on periodically poled lithium niobate[J]. Optics Letters, 1998, 23(3): 168-170.
[14] Li P, Li Y J, Feng J X, et al. Theoretical and experimental investigation of the singly resonant optical parametric oscillator under double-pass pumping[J]. Applied Optics, 2015, 54(14): 4374-4379.
[15] Moore G T, Koch K, Cheung E C. Optical parametric oscillation with intracavity second-harmonic generation[J]. Optics Communications, 1995, 113(4/5/6): 463-470.
[16] Aytür O, Dikmelik Y. Plane-wave theory of self-doubling optical parametric oscillators[J]. IEEE Journal of Quantum Electronics, 1998, 34(3): 447-458.
[17] Manjooran S, Zhao H, Lima I T, et al. Phase-matching properties of PPKTP, MgO∶PPSLT and MgO∶PPcLN for ultrafast optical parametric oscillation in the visible and near-infrared ranges with green pump[J]. Laser Physics, 2012, 22(8): 1325-1330.
[18] Lu H D, Wei J, Wei Y X, et al. Generation of high-power single-frequency 397.5 nm laser with long lifetime and perfect beam quality in an external enhancement-cavity with MgO-doped PPSLT[J]. Optics Express, 2016, 24 (21): 23726-23734.
[19] Hu X P, Xu P, Zhu S N. Engineered quasi-phase-matching for laser techniques[J]. Photonics Research, 2013, 1(4): 171-185.
[20] Wen X, Han Y S, Wang J M. Comparison and characterization of efficient frequency doubling at 397.5 nm with PPKTP, LBO and BiBO crystals[J]. Laser Physics, 2016, 26(4): 045401.