Experimental demonstration of Kerr optical frequency comb generation in a tellurite microsphere

Andrianov, Alexey V.; Anashkina, Elena A.

doi:10.1364/ol.484547

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…Multicascade Raman generation was numerically simulated using microspheres of different diameters and with different Q-factors. It should be noted that the highest loaded Q-factor for tellurite microresonators experimentally achieved so far was Q = 3.7 × 10 7 [32]. Raman lasing up to the second cascade inclusive was obtained in a TWL microsphere with loaded Q-factor Q = 2.4 × 10 7 [23].…”

Section: Numerical Simulations Of Multicascade Raman Lasingmentioning

confidence: 84%

Theoretical Study of Multicascade Raman Microlasers Based on TeO2–WO3–Bi2O3 Glass

Anashkina,

Marisova,

Andrianov

2023

Photonics

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The development and investigation of miniature narrow-line coherent light sources based on microresonators with low-power-consumption whispering gallery modes (WGMs) is an actual trend in modern photonics. Raman WGM microlasers can operate at wavelengths inaccessible to traditional laser media and provide a huge pump frequency tuning range. Here, we propose and theoretically study multicascade Raman microlasers based on soft tellurite TeO2–WO3–Bi2O3 glass WGM microresonators (microspheres) which can operate in the near-IR and mid-IR with the pump in the telecommunication range. Thanks to a large Raman gain (120 times exceeding the maximum Raman gain of silica glass) and a huge Raman frequency shift of 27.5 THz for this glass, the Raman waves at 1.83 µm, 2.21 µm, 2.77 µm, and 3.7 µm in the first, second, third, and fourth cascades, respectively, are theoretically demonstrated with a pump at 1.57 µm. We analyze in detail the influence of different factors on the characteristics of the generated Raman waves, such as microsphere diameters, Q-factors, pump powers, and detuning of the pump frequency from exact resonance. We also solve a thermo-optical problem to show that the temperature of a soft glass microresonator heated due to partial thermalization of pump power remains below the glass transition temperature. To the best of our knowledge, mid-IR tellurite glass Raman WGM microlasers have not been studied before.

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Section: Numerical Simulations Of Multicascade Raman Lasingmentioning

confidence: 84%

Theoretical Study of Multicascade Raman Microlasers Based on TeO2–WO3–Bi2O3 Glass

Anashkina,

Marisova,

Andrianov

2023

Photonics

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“…The glass filament was softened and melted with a CO 2 laser. This process has been described in detail in [ 16 , 26 ]; here, we briefly consider the main steps. First, the filament was vertically suspended with a weight at its end ( Figure 1 a).…”

Section: Methodsmentioning

confidence: 99%

“…Next, a solid glass microsphere was formed at the tapered end under the action of CO 2 -pulsed radiation due to the surface tension force ( Figure 1 d,e). The size of the microspheres was controlled in the 40–100 µm range by the number of laser pulses and their energy [ 16 ].…”

Section: Methodsmentioning

confidence: 99%

“…As one of the reasons, we see the insufficiently high Q-factors obtained earlier. However, this problem is technically surmountable, as we have achieved Q-factors of up to 3.7 × 10 7 [ 16 ] (which is far from the fundamental limit for tellurite glasses). Tellurite glasses have a very wide Raman gain band, the maximum of which, depending on exact composition, can be at a frequency of 20–28 THz [ 17 ] (against 13 THz for the commonly used silica glass), which is very attractive for wideband frequency conversion.…”

Section: Introductionmentioning

confidence: 99%

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Raman Lasing in a Tellurite Microsphere with Thermo-Optical on/off Switching by an Auxiliary Laser Diode

Anashkina,

Marisova,

Dorofeev

et al. 2023

Micromachines

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The generation of coherent light based on inelastic stimulated Raman scattering in photonic microresonators has been attracting great interest in recent years. Tellurite glasses are promising materials for such microdevices since they have large Raman gain and large Raman frequency shift. We experimentally obtained Raman lasing at a wavelength of 1.8 µm with a frequency shift of 27.5 THz from a 1.54 µm narrow-line pump in a 60 µm tellurite glass microsphere with a Q-factor of 2.5 × 107. We demonstrated experimentally a robust, simple, and cheap way of thermo-optically controlled on/off switching of Raman lasing in a tellurite glass microsphere by an auxiliary laser diode. With a permanently operating narrow-line pump laser, on/off switching of the auxiliary 405 nm laser diode led to off/on switching of Raman generation. We also performed theoretical studies supporting the experimental results. The temperature distribution and thermal frequency shifts in eigenmodes in the microspheres heated by the thermalized power of an auxiliary diode and the partially thermalized power of a pump laser were numerically simulated. We analyzed the optical characteristics of Raman generation in microspheres of different diameters. The numerical results were in good agreement with the experimental ones.

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Design of Si3N4 ridge-slot micro-ring resonator and generation of dual-comb based on orthogonally bicolor pumping

Wen,

Wang,

et al. 2024

Optoelectron. Lett.

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Experimental demonstration of Kerr optical frequency comb generation in a tellurite microsphere

Cited by 3 publications

References 27 publications

Theoretical Study of Multicascade Raman Microlasers Based on TeO2–WO3–Bi2O3 Glass

Theoretical Study of Multicascade Raman Microlasers Based on TeO2–WO3–Bi2O3 Glass

Raman Lasing in a Tellurite Microsphere with Thermo-Optical on/off Switching by an Auxiliary Laser Diode

Design of Si3N4 ridge-slot micro-ring resonator and generation of dual-comb based on orthogonally bicolor pumping

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