An important goal for microcombs is self-referencing, which requires octave-spanning bandwidths to detect and stabilize the comb carrier envelope offset frequency. Further, detection and locking of the comb spacings are often achieved using frequency division by electro-optic modulation. The thin-film...
corresponding to a peak power of 9.4 kW, the OPG spectrum spans from 6.6 to 9.6 μm. As the pump energy is increased to 8.2 nJ, a macroscopic broadening of OPG spectra is observed because of the parametric gain bandwidth broadening12which could tolerate...
We report on infrared supercontinuum generation extending over more than one octave of bandwidth, from 850nm to 2.35μm, produced in a single spatial mode from a robust, compact, composite chalcogenide glass nanotaper. A picosecond laser at 1.55μm pumps a high-index-contrast, all-solid nanota...
(b) The dispersive waves are generally weaker, that is, their power is within 1–5% of the high-power solitons generated after fission, and they also spread out temporally and spectrally over a wide bandwidth, thus limiting the peak and average power in the relevant region (that is, f)....
A combination of broad bandwidth chirped mirrors and an additional fused silica plate are used in the cavity to bring the average group-delay dispersion (GDD) close to 0 fs2. The optical spectra at different repetition rates are shown in Fig.1 (b). With mode-locked operation, the total ...
This allows positioning of a frequency comb mode to any desired frequency within the comb bandwidth. The ability to derive octave spanning spectra from microresonator comb generators represents a key step towards achieving a radio-frequency to optical link on a chip, which could unify the fields ...
This supercontinuum bandwidth significantly exceeds the previously reported spectra for other nonlinear glass-based optical fibers, even with a fairly short fiber length. Furthermore, this short fiber length allows PCF to be more efficiently utilized, and is expected to be suitable for various ...
We experimentally demonstrate 140-THz bandwidth (at 20 dB) supercontinuum generation in a 10 cm-long all-normal dispersion step-index tellurite fiber pumped by a turn-key femtosecond fiber laser emitting at 2.11渭m at a repetition rate of 19 MHz. The soliton self-frequency shifted thulium-doped...
an octave optical comb spanning from 1100 to 2200 nm is successfully realized through the self-phase modulation effect and dispersion wave generation in a commercial nonlinear optical fiber.Using dual-mode microcavity lasers with different mode intervals,we achieve frequency combs with octave bandwidths...
In the case of mode locked lasers, overcoming the limited bandwidth has become possible only with the advent of photonic crystal fibres for supercontinuum generation. Here, we report for the first time the generation of an octave-spanning frequency comb directly from a toroidal microresonator on a...