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Rectification optical

Koroteev N I 1996 Optical rectification, circular photogalvanic effect and five-wave mixing in optically active solutions Proc. SPIE 2796 227-38... [Pg.1231]

These effects correspond, respectively, to the processes of sum-frequency generation (SFG), SFIG and optical rectification. [Pg.1273]

J. B. Khurgin, Second Order Nonlinearities and Optical Rectification... [Pg.306]

DC electric fields. DC generation is known as optical rectification. The actual phenomena that will be observed depend on the experimental conditions and whether or not phase matching has been achieved. Three-wave mixing processes in which two beams interact to generate a third beam require the mixing medium to have a non-zero In an isotropic medium, reversal of the... [Pg.269]

Terahertz imaging approaches have typically used either short-pulsed laser or continuous wave (CW) THz generation and detection. The short-pulsed method usually involves the generation and detection of sub-picosecond THz pulses using either photoconductive antenna structures or optical rectification in a non-linear crystal. Pulsed sources seem to be more favorable (in particular for close proximity applications) because they can be used for acquiring depth information. Spectral information is retrieved by a Fourier transform of the time-domain data to the frequency domain. [Pg.338]

For second harmonic generation (SHG), the tensor is y(2)(—2co co, co) (useful for frequency doubling and parametric down-conversion) while for the linear electrooptic or Pockels71 effect the tensor is y(2)(— co co, 0) (useful for Q-switching of lasers, for phase or amplitude modulators, and for beam deflectors) for optical rectification the tensor is y 2>(0 00, —co) for frequency mixing the tensor is y(2)(— co3 oolr co2) (useful for frequency up-converters, optical parametric oscillators, and spectroscopy). [Pg.688]

Here Xo (2w), x (wiiw2) and Xo (O) are the non-resonant values of the hyperpolarisabilities. Thus second harmonic generation is resonantly enhanced at both the fundamental and the harmonic of the optical transition, sum and difference frequency generation at the fundamentals and the sum and difference frequencies, and the rarely observed optical rectification only at the fundamental frequency. The term 3 in the expansion gives rise to effects such as third harmonic generation, x(3) -3oj oj, oj,u>), electric field induced second harmonic generation, x(3) (- 2w 0,w, oj), the optical Kerr effect, x(3) (-oj oj, oj, -cj), etc. that will display resonances at oj, 2oj and 3u>. [Pg.97]

Apart from SHG and THG, Eq. (3) also reveals a second-order DC contribution (optical rectification) and the optical Kerr effect (i.e., the dependence of the term at the original frequency upon the light intensity / CX Eg ). A similar expression can be derived for the macroscopic polarization. Other NLO effects can be described utilizing different frequencies and/or static "(0) or magnetic B(0) fields (see Table 1). [Pg.3418]

Another application of noncentrosymmetric materials is generation of T Hz electric pulses, impossible to obtain by using classical electric circuitry. This can be done either by linear optical rectification effect with susceptibility or... [Pg.79]

Equation (8) shows the presence of new frequency components in addition to having tlie fundamental frequency co a frequency-independent one (optical rectification), and the 2co contribution. [Pg.386]

Perhaps the most important elements in THz systems are sources and detectors. Sources are vaguely classified into two categories pulsed broadband and continuous narrowband. The most common approaches for generating broadband THz pulses are photoconductive antenna and optical rectification, while voltage controlled oscillators or dielectric resonators are the two widely used sources for generating low power narrowband continuous THz waves [5]. [Pg.287]


See other pages where Rectification optical is mentioned: [Pg.1268]    [Pg.1269]    [Pg.1269]    [Pg.2864]    [Pg.258]    [Pg.258]    [Pg.301]    [Pg.108]    [Pg.51]    [Pg.8]    [Pg.674]    [Pg.518]    [Pg.301]    [Pg.27]    [Pg.38]    [Pg.39]    [Pg.98]    [Pg.98]    [Pg.396]    [Pg.338]    [Pg.296]    [Pg.297]    [Pg.351]    [Pg.529]    [Pg.129]    [Pg.97]    [Pg.129]    [Pg.3419]    [Pg.19]    [Pg.300]    [Pg.300]    [Pg.261]    [Pg.357]    [Pg.97]   
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