Second-harmonic
Measurement of the d(36) coefficient of mercury cadmium telluride by reflection second harmonic generation
... cadmium telluride 共 MCT 兲 , is measured. Because MCT is strongly absorbing at a 1.06 m wavelength, the measurement was performed by comparing the second harmonic intensity reflected from the material ...
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Genetic algorithm applied to the optimization of quantum cascade lasers with second harmonic generation
... the second order optical nonlinearities in GaInAs/AlInAs quantum cascade laser structures is ...and second harmonic generation power were calculated by self-consistently solving the system of rate ...
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Relativistic plasma surfaces as an efficient second harmonic generator
... generating second harmonic emission in the specular direction with conversion efficiencies predicted to be in excess of 40% ...for second harmonic generation (SHG) for laser applications is ...
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Reflection second harmonic generation on a z cut congruent lithium niobate crystal
... layer second harmonic polarization are related to the components of the inducing fields within the medium by a second-order laboratory-defined susceptibility tensor ( χ IJK ( 2 ) ) given by ...
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A new mode of contrast in biological second harmonic generation microscopy
... Ethical approval. Human tissue samples were obtained with informed consent and appropriate ethical approval (Human Tissue Bank licence no. 12179), anonymised and used in accordance with this licence. Second ...
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On the design of enhancement cavities for second harmonic generation
... In this paper, we describe the design of en- hancement cavities that match an arbitrarily el- liptical beam such as that emitted by a laser diode, via an o-axis spherical mirror, to the optimal beam for second ...
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Fractional Fourier Transform with Pulse Inversion for Second Harmonic Pulse Compression
... ultrasound harmonic imaging with chirp coded excitation, harmonic matched filtering (HMF) is required on the receiving side to perform second harmonic pulse compression to recover signal axial ...
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Resonant subharmonic absorption and second harmonic generation by a fluctuating nonlinear oscillator
... The effect of fluctuations on the nonlinear response of an underdamped oscillator to an external periodic field at a subharmonic frequency has been investigated theoretically, numerically, and with an analog elec- tronic ...
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Photoinduced Second Harmonic Generation for the In2O3 Nanoparticles Embedded into the PMMA Polymers
... nanoparticles so obtained were characterized by powder X-ray powder diffraction (XRD), high resolution transmission electron microscopy, FTIR and Raman spectroscopy and were found to be highly crystalline with cubic ...
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Investigation of Non-linear Chirp Coding for Improved Second Harmonic Pulse Compression
... In this paper, a nonlinear frequency-modulated (NLFM) chirp coding was investigated to improve the pulse compression of the second harmonic chirp signal by reducing the range sidelobes level. The problem of ...
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Synthesis and Functionalization of Second Harmonic Generation Nanocrystals and Their Application in Biological Imaging
... second harmonic generation has the same benets of utilizing NIR light, which allows for deeper tissue penetration, and that the imaging is conned only to the focal volume where the light intensity is ...
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Growth and Characterization of Guanidinium Trifluoroacetate – Second Harmonic Generation from a Centrosymmetric Crystal
... generation have been studied over the past three decades due to their commercial importance in the fields of optical communication, signal processing, sensing and instrumentation [1, 2]. Different types of molecular and ...
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General analysis of type I second harmonic generation with elliptical Gaussian beams
... the harmonic frequency depends quadratically on that of the fundamental, and the effi- ciency of second-harmonic generation thus increases as the input power is focused into a smaller ...
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The quantum mechanics of electro-optic feedback, second harmonic generation, and their interaction
... After the mode cleaner enhanced squeezing experiments had been performed and a new experimental arrangement gave access to the reflected fundamental as discussed in section 6.5.4, correlation experiments were performed ...
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Investigation of the depolarisation transition in Bi based relaxor ferroelectrics
... the second order term contains a component of the polarisation that oscillates at twice the frequency of the ...ond harmonic. 29 The second order dielectric susceptibility, v (2) , is a third rank ...
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Detection of the second harmonic of decay less kink oscillations in the solar corona
... a harmonic was spa- tially resolved and anti-phase behaviour between the legs either side of the apex was observed, which is the ex- pected behaviour for an even harmonic, standing ...ond harmonic, ...
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Development of Multiphoton Ionization Technique for Detection of Polycyclic Aromatic Hydrocarbon (PAH) in Solution
... Fourth harmonic emission of Nd:YAG laser (266 nm, 6 ns, 10 Hz, and 2 mJ) and second harmonic generation of distributed feedback dye laser (278 - 286 nm, 20 ps, 10 Hz, and 300 μJ) were used as the ...
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Second Harmonic Generation in Some Donor Acceptor Substituted Chalcone Derivatives
... excellent second harmonic generation con- version efficiency, and good optical limiting behavior with nanosecond laser pulse at 532 nm wavelength ...
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Imaging with Second Harmonic Generation Nanoparticles
... radiates ~ 10 -3 photon/second under the same excitation intensity (~ 10 kW/cm 2 average intensity), which is extremely weak for detection. The excitation may be increased by an order of magnitude since it is only ...
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Magnetic second harmonic generation from interfaces and nanostructures
... magnetic second-harmonic generation (MSHG) is a more difficult and expensive technique but, uniquely, can measure the surface and interface magnetism of ...
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