Raman amplification
Chirped pulse Raman amplification in warm plasma : towards controlling saturation
... Stimulated Raman backscattering in plasma is potentially an efficient method of amplifying laser pulses to reach exawatt powers because plasma is fully broken down and withstands extremely high electric ...
9
Raman amplification in plasma : thermal effects
... The impact of thermal effects on Raman amplification has been investigated. The shift in plasma resonance over time due to heating by the pump acts as a chirp. For a monochromatic pump, this chirp leads to ...
6
Chirped pulse Raman amplification in plasma: high gain measurements
... pulse Raman amplification obtained in the linear regime, which occurs when a long chirped pump pulse collides with a short counter- propagating seed pulse in a plasma ...pulse Raman amplifier (CPRA) ...
10
Raman amplification and pulsed lasing in cladding pumped germanosilicate fiber
... Figure 2 shows the DCRF gain vs. pump power for 1420 and 940 m long DCRFs. The gain was determined by varying the total cavity loss via the VOA, and adjusting the pump power until threshold for lasing was reached. The ...
6
An ultra-high gain and efficient amplifier based on Raman amplification in plasma
... of amplification and competing Raman amplification from noise to be carried ...of amplification in a counter-propagating geometry is evaluated by measuring the angular energy density of ...
10
Chirped pulse Raman amplification in plasma
... gain, Raman amplification can be diminished by several concurrent phenomena such as spontaneous Raman backscattering, leading to early pump depletion, Raman forward scattering, temperature ...
10
Scaling of Raman amplification in realistic slow light photonic crystal waveguides
... pump-power Raman amplification in silicon waveguides has recently been boosted by theoretical studies discussing the enhancement of nonlinear phenomena in slow-light ...of Raman gain, but in the ...
6
Plasma density measurements using chirped pulse broad-band Raman amplification
... etc. Raman backward (RBS) and Raman forward (RFS) scatter- ing are commonly used to determine the density in under- dense plasma in studies of laser wakefield ...stimulate Raman scattering; density ...
5
Compression of X-ray Free Electron Laser pulses to attosecond duration
... State of the art X-ray Free Electron Laser facilities currently provide the brightest X-ray pulses available, typically with mJ energy and several hundred femtosecond duration. Here we present one- and two-dimensional ...
7
An investigation into using optical amplifiers for enhancing Brillouin based optical time domain reflectometry
... co-propagating Raman pump ...experienced Raman amplification, resulting in an increase in the signal levels, which peaked at around 70 ...the Raman pump power had been significantly attenuated ...
155
Distributed optical fibre sensors based on the coherent detection of spontaneous Brillouin scattering
... distributed amplification using standard SMF, they have a narrow gain bandwidth (∼35MHz) and a high noise figure (∼20dB) [2], and this effec- tively removes such amplifiers from further ...consideration. ...
184
Distributed optical fibre sensing at 1 65µm using a Q switched fibre laser
... using a single-ended measurement technique. The installation of these cables require critical design issues as fibres are more susceptible to bend losses at higher wavelengths. OTDR diagnostic tools operating at a higher ...
8
Raman Solitons and Raman spikes
... The efficiency of the method of solution serves not only as a basis for seeking the Raman soliton, but also to evaluate exactly the result of any Raman amplification. Indeed the SRS equations are ...
5
Development of a Loop Mediated Isothermal Amplification (LAMP) - Surface Enhanced Raman spectroscopy (SERS) Assay for the Detection of Salmonella Enterica Serotype Enteritidis
... mal amplification techniques for nucleic acid ampli- fication without the use of dedicated equipment has stimulated extensive research interest and applica- ...isothermal amplification (LAMP) is one ...
11
Rapid Extraction Method of Mycobacterium ulcerans DNA from Clinical Samples of Suspected Buruli Ulcer Patients
... The Mu DNA GenoLyse extraction protocol eliminates the need for high-speed centrifuges required for typical GenoLyse ® extraction procedures [22,23] or other M. ulcerans DNA extraction procedures (Table 4) with low-speed ...
11
Optical sectioning in multi foci Raman hyperspectral imaging
... First, we investigated four multifoci beam patterns, with the adjacent aperture distance ‐ to ‐ size ratio gradually increased from R = 2 to R = 16, using a uniform polystyrene slide and a thick transparent sample (oil), ...
8
Analysis of Horizontal Well Operation at the Zhanazhol Deposit
... The main principles of drilling of directional and horizontal wells served as the basis for the development of the method of reservoir multihole opening, providing a multiply expanded[r] ...
8
Depression Among Pregnant Latinas In South Carolina
... the Raman signal for bands further away from the Littrow positon contribute to the difference show in the relative ...laser Raman excitation of solid ...band Raman lines, specifically the O-H ...
45
Radiative Processes in Astrophysical Gases: From the Intergalactic and Interstellar Medium to Exoplanetary Atmospheres
... Evans et al. (2013) measured the albedo of hot Jupiter HD 189733 b over the wavelength range 290-570 nm using the STIS instrument on the Hubble Space Telescope . They report the geometric albedo binned in six wavelength ...
180
Detection of glycosylation and iron binding protein modifications using Raman spectroscopy
... Transferrin is a relatively small molecule (molecular mass ca. 79 kDa) with two evolutionary related lobes each consisting of two domains with a central β-sheet backbone that interacts to form the iron binding site. ...
19