Stimulated Brillouin laser and frequency comb generation in high-Q microbubble resonators

Abstract

We report on the stimulated Brillouin laser (SBL) and over-dense frequency comb generation in high-Q microbubble resonators (MBRs). Both first-order and cascaded SBL are achieved due to the rich high-order axial modes in the MBRs, although the free spectral range (FSR) of azimuthal mode of the MBR is severely mismatched with the Brillouin shift. The SBL is also generated by varying the internal pressure of MBR at fixed initially non-resonant pump light wavelength. In addition, over-dense frequency combs are realized with comb spacings that are one and two FSRs of aixal mode.

Efficient frequency generation in phoXonic cavities based on hollow whispering gallery mode resonators

“…In refs 26 and 33, the MBR used have very thick walls (of about 10–15 μm) compared to ours (2–4 μm), and the SBS and FWM observed in ref. 26 are not either simultaneous or the SBS line does not act as a pump in SBS-uncoupled FWM processes. Regarding the efficiency of the SBS lines, we are presenting results that are at least more than one order of magnitude higher.…”

“…More recently, MBR have been used for fundamental studies in nonlinear optics202633 and lasing34. In refs 26 and 33, the MBR used have very thick walls (of about 10–15 μm) compared to ours (2–4 μm), and the SBS and FWM observed in ref. 26 are not either simultaneous or the SBS line does not act as a pump in SBS-uncoupled FWM processes.…”

“…The majority of applications of microbubble resonators (MBR) are in the sensing field: refractometers2728, mass sensors29, temperature30, pressure31 and viscosity32. More recently, MBR have been used for fundamental studies in nonlinear optics202633 and lasing34. In refs 26 and 33, the MBR used have very thick walls (of about 10–15 μm) compared to ours (2–4 μm), and the SBS and FWM observed in ref.…”

“…One of the latest geometries, the microbubble22 or microbottle23 has attracted much attention lately. Another advantage of the hollow structure of the bubble is that it allows flowing liquids or gas inside the WGMR, giving the possibility of tailoring the dispersion24 or resonant properties2526. The majority of applications of microbubble resonators (MBR) are in the sensing field: refractometers2728, mass sensors29, temperature30, pressure31 and viscosity32.…”

Использование микродисковых лазеров с квантовыми точками InAs/InGaAs для биодетектирования

“…Резонаторы с МШГ перспективны для множества практических приложений, среди которых низкопороговые лазеры [2,3], интегральные фотонные устройства [4,5], оптические сенсоры [6][7][8][9]. Также резонаторы с МШГ нашли применение в приборах оптомеханики [10,11] и нелинейной оптики [12][13][14]. Основной механизм детектирования одиночной биомолекулы МШГ-биосенсором [2] основан на изменениях резонансной длины волны и/или полуширины резонансной линии, что вызвано возмущением, которое оказывает частица на моду микрорезонатора.…”