Raman gain
Raman gain against a background of non-thermal ion fluctuations in a plasma
... of Raman growth in the presence of ...of Raman gain in which both primary and secondary decays take place in an inhomogeneous plasma, so that the parametric resonances are local in ...
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Steady-state Raman gain in diamond as a function of pump wavelength
... The Raman gain coefficient is typically deduced in one of two ways: from a comparison of the SRS threshold in diamond with that for a material with a known gain coefficient [26], or from modelling of ...
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Active slow light in silicon photonic crystals : tunable delay and Raman gain
... The Raman scattering is a well-known optical effect resulting from the in- teraction of light with the vibrational modes of a material system and, in its stimulated form, has been widely demonstrated in the past ...
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Co axial Fiber Design for Inherently Flatten Raman Gain Spectra
... flatten gain Raman amplification for any wavelength band by using a signal pump only [4, ...inherent Raman gain flattening has been ...effective Raman gain is obtained inherently ...
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Energy scaling, second Stokes oscillation and Raman gain-guiding in monolithic diamond Raman lasers
... the Raman laser mode may be significantly higher than what would otherwise be expected, at least in CW Raman ...the Raman gain-guiding may play a significant role in determining the power ...
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Optimizing of Raman Gain and Bandwidth for Dual Pump Fiber Optical Parametric Amplifiers Based on Four-Wave Mixing
... Where, K is standard phase mismatchs 3 /km and Δβ is linear phase mismatchs 3 /km, while 2 nd term represents non- linear phase mismatch. For perfect phase mismatch, total phase ‘K=0’ which gives maximum gain and ...
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Characterization of single-crystal synthetic diamond for multi-watt continuous-wave Raman lasers
... to Raman lasers are set out in Table 1 and compared to a conventional material, ...and Raman gain coefficient – four fold ...unit Raman laser output power despite the shorter lengths of ...
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100 kW peak power external cavity diamond Raman laser at 2.52 μm
... Effective Raman gain coefficients [28,29] are associated with the specific laser system and are lower in value than material Raman gain coefficients, due to a Raman gain ...
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Distributed Multi-Raman Amplifier for New Wavelength Range
... differential Raman gain, g m/w, with wavelength, λ, at different values of the relative refractive index difference ...increases, Raman gain will increase.We note that Raman gain ...
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Effective use of an EDFA and Raman pump residual powers via a Bi EDF in L band multi wavelength fiber laser generation
... erbium gain media with advantages of power conversion efficiency and low threshold, such lasers are normally unstable and suffer gain competition among differ- ent lasing wavelengths at room temperature due ...
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Controllable continuous-wave Nd:YVO4 self-Raman lasers using intracavity adaptive optics
... mounted in a water-cooled copper block and used as laser and Raman gain medium. Its side surfaces were anti- reflection (AR)-coated (reflectivity (R) < 0.1 % @ λ = 1064 & 1109 – 1176 nm; R < 5 % @ ...
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1.6 W continuous-wave Raman laser using low-loss synthetic diamond
... Crystalline Raman lasers enable wavelengths between ...a Raman material in external cavity [3–6] and intracavity [7–9] configurations has been demonstrated – made possible by the progress in diamond ...
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Spectral broadening in continuous-wave intracavity Raman lasers
... where gain is independent of the fields’ linewidths (we calculate for the present laser that we are two orders of magnitude below the critical ...the Raman linewidth, the coherence time of the pump field ...
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Performance Evaluation Of Hybrid Raman And Erbium Doped Fiber Amplifiers (HFAs)
... non-flat gain characteristics. A typical Raman gain level curve has minimum gains at about 1570 nm, 1595 nm, and 1620 nm, and maximums at 1585 nm and 1610 ...A gain flattening filter can be ...
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PERFORMANCE ANALYSIS OF OPTICAL AMPLIFIERS FOR INCORPORATION IN OPTICAL NETWORK
... of Raman amplifier are three fold; first, Raman gain exists in every fiber, which provides a cost-effective means of upgrading from the terminal ...the gain is non-resonant, which is available ...
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Chirped pulse Raman amplification in plasma
... the seed beam collides with the rear of the pump beam (higher frequencies), under proper frequency detuning, the low frequencies of the seed are amplified. Conversely, interaction with the front of the pump beam leads to ...
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Excitation energy dependent nature of Raman scattering spectrum in GaInNAs/GaAs quantum well structures
... conventional Raman spectroscopy is much higher than the phonon energies; therefore, the process does not only involve electron – phonon interaction, but also creates electron – hole pairs via absorption and then ...
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Cavity-Enhanced Raman Spectroscopy of Natural Gas with Optical Feedback cw-Diode Lasers
... unpolarized Raman detection since no analyzer was used. Raman light is imaged from the multimode glass fi ber into the 100 μ m entrance slit of the monochromator (Shamrock SR- ...C). Raman shifts ...
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Contemporaneous ultraviolet and optical observations of direct and Raman scattered O VI lines in symbiotic stars
... assume a single cloud along the line of sight and thus do not account for multiple cloud absorptions or circumstellar absorption. The revised flux ratios for Z And, V1016 Cyg, and AG Dra are closer to the optically thin ...
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Theoretical and Experimental Studies of Vibrational Spectra of Nicotinic Acid
... observed Raman and IR frequencies corresponding to fundamental modes have been correlated to the calculated fundamental frequencies of NA-I using B3LYP, X3LYP and B3PW91 methods with 6-311++G(d, p) basis ...
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