Cascaded Brillouin, Raman, and Four-Wave-Mixing Generation in a 1.06-μm Microsphere-Feedback Yb-Fiber Laser
We propose and experimentally demonstrate a compact microresonator-feedback single-frequency fiber laser at 1.06 μm, and further initiating different-type nonlinear lasing based on stimulated Brilliouin scattering, stimulated Raman scattering, and four-wave mixing (FWM). A sili...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2018-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8103888/ |
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| Summary: | We propose and experimentally demonstrate a compact microresonator-feedback single-frequency fiber laser at 1.06 μm, and further initiating different-type nonlinear lasing based on stimulated Brilliouin scattering, stimulated Raman scattering, and four-wave mixing (FWM). A silica microsphere with an ultrahigh Q-factor is employed in our experiment as a narrow bandwidth cavity mirror around 1.06 μm, and a generator of nonlinear optical effects subsequently. With the help of mode selection both from the silica microsphere and a fiber Bragg grating, single-frequency lasing with a linewidth as narrow as 281 kHz is obtained at 1.06 μm by employing 974-nm laser diode pumped Ytterbium-doped fiber as a gain medium. By optimizing the polarization states, controlling the coupling position between the fiber taper and microsphere as well as the pump power, three-order cascaded Brilliouin Stokes lasings at 1.06 μm, and cascaded Raman lasing at 1.12, 1.18 and 1.23 μm are realized, respectively. An FWM-based optical frequency comb (OFC) with a bandwidth ∼31 nm is further realized with center wavelength of ∼1.06 μm. Interestingly, a 1.18-μm-centered OFC with ∼37-nm bandwidth is also generated assisted by the second-order Raman-gain. |
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| ISSN: | 1943-0655 |