Broadband Supercontinuum Generation in Dispersion Decreasing Fibers in the Spectral Range 900–2400 nm

Abstract

The spectrally flat supercontinuum generation in the wavelength range of 900–2400 nm is demonstrated in silica-based fibers of variable core diameter and dispersion. It is shown that, in comparison with standard optical fibers of the same length, supercontinuum spectra 200 nm wider can be realized in the samples under study. The significant difference between the spectral and temporal transformations of radiation depending on the direction of propagation is demonstrated in the researched fiber samples.

Broadband Supercontinuum Generation Using Dispersion Engineered As₂Se₃-GeAsSe-GeAsS Waveguide at 6 μm

“…Cherif et al gave a numerical study on As 2 Se 3 -based chalcogenide PCF spanning 2 octaves using a central wavelength of 2.8µm [38]. Zhlutova et al, demonstrated a spectrally demonstrated flat SC generation in Silica-based dispersion decreasing fibers (DDF) with different core diameters and achieved a significant difference in the temporal and spectral transformation of radiation depending on the direction of wave propagation [39]. Kalashnikov et al, studied the Raman response in soft-glass PCFs in infrared supercontinuum generation to show that the Raman shift is double as high in the soft-glass as compared to fused silica [40].…”

Soliton Raman shift wavelength tuning through the pump pulse polarization control

“…This wavelength area is located in the third optical window, and defines the spectral region where the light has minimum scattering losses and a maximum depth of penetration in tissue, so these sources are in high demand in the development of biomedical multiphoton imaging system [6][7][8][9][10]. Laser sources operating at the wavelengths over 1.8 μm is of particular interest for applications in LIDARs, spectroscopy, and atmospheric analysis [11][12][13][14]. Passively mode-locked fiber lasers combining high beam quality, simplicity of adjustment, reliability, user-friendly fiber interface and relatively low cost are of great demand for these applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

“…Laser sources operating at the wavelengths over 1.8 μm is of particular interest for applications in LIDARs, spectroscopy, and atmospheric analysis [11][12][13][14]. Passively mode-locked fiber lasers combining high beam quality, simplicity of adjustment, reliability, user-friendly fiber interface and relatively low cost are of great demand for these applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Numerical Study of Efficient Tm-Doped Zinc-Tellurite Fiber Lasers at 2300 nm

“…There are several ways to obtain coherent light at wavelengths near 2300 nm with compact optical fiber systems based on nonlinear light conversion [2][3][4][5][6][7][8], as well as on laser generation at a radiative transition of active ions [1,[9][10][11][12][13][14][15]. One of them is supercontinuum generation in different nonlinear fibers [2][3][4][5]. Another solution is continuous-wave (CW) Raman lasers [6,7].…”