Single-frequency ultranarrow linewidth microdisk laser (IMAGE)
Caption
Single-frequency ultranarrow linewidth microdisk laser: (a) Spectrum of single-mode lasing, Inset: the microdisk coupled with a tapered fiber, where the scale bar is 10 μm. (b) Laser output power versus pump power dropped to the cavity shows a pump threshold of 25 μW. (c) The spectrum of the detected beating signal for two independent microlasers, indicating a laser linewidth of 322 Hz. (d) The intensity distributions of the experimental polygon modes and the simulated counterparts, and the overlap of the pump mode and lasing mode is 0.86.
Credit
Lin et al., doi 10.1117/1.AP.4.3.036001
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