Few-cycle pulse generation from compression of supercontinuum by optimizing initial chirp in ANDi-PCF

Flatly Broadened and Highly Coherent Supercontinuum Generation by Induced Modulation Instability in ANDi-PCF

“…However, many applications of SC are limited by the coherence property of SC. For examples, If the coherence degree is not high, the resolution of the nonlinear microscope will be reduced; in the optical coherence tomography system (OCT), the coherence degree determines the measurement resolution level [2]; in terms of optical pulse compression, SC coherence degree di-Journal of Applied Mathematics and Physics rectly affects the quality of pulse compression [3] [4], and so on. Therefore, the coherence property of SC is very important which will ultimately affect the quality and range of the end application.…”

“…In contrast to the normal dispersion region, the anomalous dispersion region can produce a wider SC spectrum, but its coherence properties are very low and it is difficult to be used in many practical applications [1] [2] [3] [4]. In recent years, with the rapid development of the high nonlinear photonic crystal fiber (PCF), ultra-wide and highly coherent SC has become a possibility in the normal dispersion region.…”

“…of the seed, 0 d means the modulation depth, mod f is the modulation frequency, p τ is the temporal width, which is related to FWHM pulse a small random phase fluctuation which is caused by Gaussian white noise [3][4].…”