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Free-standing thin-film flexible Si1−xGex saturable absorber with Si/Ge composition-ratio dependent saturable absorbance is demonstrated to passively mode-lock the erbium-doped fiber laser for delivering a pulsewidth of 330 fs at a modulation depth of 16%.
The self-organized two dimensional (2D) honeycomb-like tin sulfide (SnS) nano-porous structure with high absorption and depolarization features is solid-phase synthesis by RF sputtering. The high absorption coefficient up to 105 cm−1 for planar and nano-porous SnS is enlarged and red-shifted absorption bandedge from 1.43 and 1.16, and the absorption coefficient band edge is increasing to the higher...
Nonstoichiometric Si1−xGex films fabricated by plasma enhanced chemical vapor deposition (PECVD) with different flounce ratios are demonstrated to show the composition ratio dependent optical properties, including refractive index, bandgap and optical absorption. By increasing the fluence ratio from 0.2 to 0.5, the refractive index of Si1−xGex film raises from 3.527 to 3.927, with the absorption coefficient...
The low-temperature PECVD grown carbon-rich silicon carbide film with thickness of 200 nm is employed to passively mode-lock the fiber laser with pulsewidth of 510 fs and linewidth of 5.46 nm.
A Si-rich silicon carbide (Si1−xCx) based p-n junction photovoltaic solar cells is demonstrated by growing the non-stoichiometric SixC1−x film with plasmas enhanced chemical vapor deposition (PECVD) at low RF plasmas powers. By decreasing RF plasma power from 100 to 20 W at medium substrate temperature of 500°C, the X-ray photoelectron spectroscopy (XPS) analysis confirms an decreasing composition...
A photonic crystal resonator incorporated Si-rich SiOx film with buried Si nanocrystals showing room-temperature single-mode emission at 639 nm is demonstrated with spectral linewidth of 1 nm and threshold pumping intensity of 50.3 kW/cm2.
Si-nanocrystal incorporated Si-rich SiOx strip-loaded waveguide amplifiers grown by detuning N2O/SiH4 fluence ratio and RF power are demonstrated with blue, yellow, and red multi-color amplified-spontaneous-emission and gain coefficients of 160, 70 and 45 cm-1.
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