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We report a Si3N4 microresonator which simultaneously satisfies single-mode operation, high Q-factor and anomalous dispersion. With controlled high-speed pump-wavelength scanning, we successfully observe a smooth phase-locked Kerr frequency comb transition based on dissipative solitons.
Terahertz spectrometer up to 110 m single-pass measurement trace was realized by room-temperature GaSe:S down-converter operating at 0.2–0.6 THz range with 0.1 cm−1 high resolution. Ab-initio measurements were carried out in the real atmosphere.
A reconfigurable optical inter-channel interference compensation method without channel spacing estimation and relative time delay calibration is proposed for a high density multi-carrier transmission system. Experiments demonstrate the effectiveness for both 20/25-Gbaud dual-carrier QPSK systems with different channel spacing conditions.
The thermo-optical effects in the diode-end-pumped lasers with Yb:KGW anisotropic crystals is experimentally investigated. Strong dependence of optical power and aberrations of the lenses on orientation of laser crystals concerning a direction of laser radiation propagation and a polarization direction is confirmed. By optimizing the crystal configuration we obtained a high-power output laser beams...
We demonstrate a broadband Kerr frequency comb and mode-locking in a globally-normal-dispersion microresonator. A record short on-chip pulse of 74-fs is directly measured. Supported by analytical theory and numerical modeling, we describe the mode-locking mechanism.
An experimental investigation on the laser performance of an α-oriented Tm,Ho: YAIO3 crystal end-pumped by a wavelength tunable Ti:Sapphire laser is presented in this paper. Single- and dual-wavelength operations of Tm,Ho:YAIO3 lasers have been investigated in detail. Maximum output powers of 890mW at 2119nm, 836mW at 2103nm and 487mW at 2130nm for the α-oriented Tm,Ho:YAIO3 crystal have been obtained,...
By launching a 80-GHz pulsed pump and 3-channel CW lights into 1-km highly-nonlinear fiber, 6-channel C+L band 80-GHz short pulse trains are generated based on four-wave mixing (FWM).
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