Electro-optic tuning of a single-frequency ultranarrow linewidth microdisk laser

نویسندگان

چکیده

Single-frequency ultranarrow linewidth on-chip microlasers with a fast wavelength tunability play game-changing role in broad spectrum of applications ranging from coherent communication, light detection and ranging, to metrology sensing. Design fabrication such sources remain challenge due the difficulties making laser cavity that has an ultrahigh optical quality (Q) factor supports only single lasing frequency simultaneously. Here, we demonstrate unique single-frequency mechanism on erbium ion-doped lithium niobate (LN) microdisk through simultaneous excitation high-Q polygon modes at both pump wavelengths. As are sparse within gain bandwidth compared whispering gallery mode counterpart, while their Q factors (above 10 million) even higher significantly reduced scattering propagation paths, as narrow 322 Hz is observed. The measured three orders magnitude narrower than previous record LN microlasers. Finally, enabled by strong linear electro-optic effect LN, real-time electro-optical tuning microlaser high efficiency ?50 pm / 100 V demonstrated.

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ژورنال

عنوان ژورنال: Advanced photonics

سال: 2022

ISSN: ['2577-5421']

DOI: https://doi.org/10.1117/1.ap.4.3.036001