Giant raman gain in silicon nanocrystals
WebFigure 2 shows the Raman gain coefficient for fused silica as derived from the spontaneous Raman spectrum. At the peak, the Raman gain coefficient for silica fibers is 9.4×10 −14 … To suppress Raman gain and to measure the losses at the wavelength used for SRS measurements, the pump was removed and a single beam set-up was used. Losses were obtained by measuring the incident power and the power after the sample. A value of about 0.4 dB was obtained, without a significant … See more The Si concentration gradient in the sample was achieved by tilting the silica substrate with respect to the silicon beam; hence, the distance from the silicon source to the deposition surface changed across the sample, leading … See more To study Raman gain, the steady-state linear (no pump depletion) regime of SRS can be considered14,15. In this regime, the intensity of the output Stokes radiation is expressed by where IS(0) is the intensity of the input … See more The spontaneous Raman spectra were measured with a set-up consisting of an Ar-ion laser (488 nm, Omnichrome 543-AP), a single-stage … See more SRS was measured using a Raman fibre laser (IGP Photonics, RLR-5-1427) operating at 1,427 nm as a CW pump laser and a tunable … See more
Giant raman gain in silicon nanocrystals
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WebThe presence of silicon nanocrystals on the surface of standard wafer samples of Si, conserved under “usual” laboratory conditions, has been investigated by micro-Raman analysis, performed for increasing intensity of laser irradiation. WebMar 1, 2003 · A micron-scale all-silicon Raman amplifier has been proposed in this paper, exploiting the giant Raman gain of silicon nanocrystal material along with the extreme optical confinement of slotted photonic crystal waveguide. Light Emitting Diode (LED) has been considered here for low-cost optical pumping and the possibility of on-chip integration.
WebPower and High Frequencies Devices ; Flexible and Large Area Electronics ; Devices for Information Storage and Processing WebDec 11, 2013 · The enhancement of stimulated Raman scattering (SRS) in low-dimensional silicon is even larger than the enhancement of the TPA and Kerr effects, and was reported to be given by a factor of 10 5 [ 51, 41 ].
WebJun 3, 2024 · The microscope, equipped with two femtosecond laser sources, a Ti:Sa laser and an OPO output, covers the C H region or O H region (>2800 cm −1) in stimulated Raman gain (SRG) modality. The successful implementation of our imaging system is demonstrated reporting label-free images of polystyrene beads with a diameter of 3 … WebA giant Raman gain from the silicon nanocrystals is obtained that is up to four orders of magnitude greater than in crystalline silicon. These results demonstrate the first Raman …
WebA giant Raman gain from the silicon nanocrystals is obtained that is up to four orders of magnitude greater than in crystalline silicon. These results demonstrate the first Raman …
WebNov 28, 2014 · Quite the contrary, it can be seen in Fig. 3 that the Raman line is centered at 517.4 cm − 1 for the largest nanocrystals, and up-shifts to 520.0 cm − 1 as the nanocrystal size decreases to 3.6 nm. The most probable explanation of the observed effect is the presence of hydrostatic stress exerted on the Si-NCs embedded in amorphous matrix. pumpkin float event nycWebRaman gain from the silicon nanocrystals is obtained that is up to four orders of magnitude greater than in crystalline silicon. These results demonstrate the first Raman … pumpkin flaxseed granola cerealWebA giant Raman gain from the silicon nanocrystals is obtained that is up to four orders of magnitude greater than in crystalline silicon. These results demonstrate the first Raman … sèche linge whirlpool à évacuationWebRealization of a silicon-based laser, integrated with optical and electronic components on a single chip, remains one of the main challenges in optoelectronic technology. Achievement of optical amplification in silicon nanocrystals is a complex problem depending on many factors; however, it is theoretically possible. The chapter discusses the potential of … sèche linge whirlpool fftcm118xbfrWebAdvances in stimulated Raman scattering in nanostructures Luigi Sirleto, Alessandro Vergara, and Maria Antonietta Ferrara Author Information Find other works by these authors Not Accessible Your library or personal account may give you access Get PDF Email Share Get Citation Citation alert Save article About this Article History pumpkin flax seed muffinsWebStimulated Raman scattering. Govind P. Agrawal, in Nonlinear Fiber Optics (Sixth Edition), 2024 8.2.4 Raman-induced crosstalk. The same Raman gain that is beneficial for … pumpkin flax muffinsWebTGCs are composed of nanocrystals that are 10–15 nm in size, uniformly distributed in the residual glass matrix, with a crystallinity degree ranging from 30 up to 50% for samples subjected to different heat treatments. pumpkin flower nutrition