Qin Wen, Jinhui Qin, Heng Zhou, Kun Qiu. Controllable Excitation of Whispering Gallery Mode Micro-Rod Resonator[J]. Acta Optica Sinica, 2020, 40(19): 1919001
- Acta Optica Sinica
- Vol. 40, Issue 19, 1919001 (2020)
Fig. 1. Cross-sectional field distributions of micro-rod cavity. (a) n=1, m=l; (b) n=1, m=l-1; (c) n=2, m=l; (d) n=1, m=l-2
Fig. 2. Schematic of auxiliary laser heating method. (a) Auxiliary laser staying at blue-detuned region; (b) pump laser entering blue-detuned region; (c) pump laser staying at red-detuned region steadily
Fig. 3. Schematic of micro-rod cavity coupled with tapered fiber
Fig. 4. Fabrication of micro-rod cavity. (a) Schematic of experimental setup for fabricating micro-rod cavity; (b) photo of micro-rod cavity; (c) schematic of experimental setup for coupling and measurement
Fig. 5. Power transmission spectra under different laser powers. (a) 10.8 W; (b)11.2 W; (c)11.4 W; (d) 11.6 W; (e) resonance peak power transmission spectrum
Fig. 6. Power transmission spectra under different coupling distances. (a) 0; (b) 90 nm; (c) 180 nm; (d) 240 nm; (e) resonance peak power transmission spectrum
Fig. 7. Generation of solition. (a) Schematic of experimental setup; (b) pump laser coupling with auxiliary laser in opposite direction and entering micro-rod cavity
Fig. 8. Single soliton frequency comb spectra. (a) Before optimization; (b) after optimization
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Table 1. Coupling parameters and resonance peak transmission ratios of tapered fibers with different radii at coupling point
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Table 2. Coupling parameters and resonance peak transmission ratios of micro-rod cavities with different curvatures
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