Ali Hussain Reshak

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Simultaneously measurements of the second harmonic generation (SHG) signals in the forward and backward directions from deep shade plants were achieved. These measurements show that the deep shade plants produce high SHG signal in both directions and the SHG signals strongly depend on the state of the polarization of the laser light and the orientation of(More)
The spin-polarized second harmonic generation (SHG) of the recently synthesized CaCoSO single crystal is performed based on the calculated electronic band structure. The calculation reveals that the spin-up (↑) channel of CaCoSO possesses a direct energy gap (Γv-Γc) of about 2.187 eV, 1.187 eV (Kv-Kc) for the spin-down (↓) channel and an indirect gap(More)
We have measured the temperature variance of the second order susceptibilities for the LiCsB<inf>4</inf>O<inf>7</inf> borate. Our measurement show that at the temperature of about 225 K, the second order susceptibilities show its maximal signal of about 1.15 pm/V with accuracy up to 0.08 pm/V. This measurement was done using Nd-YAG laser of 7 ns pulse-width(More)
BACKGROUND We provide an update of our two-photon laser scanning microscope by compressing or reducing the broadening of the pulse width of ultrafast laser pulses for dispersion precompensation, to enable the pulses to penetrate deeply inside the sample. FINDINGS The broadening comes as the pulses pass through the optical elements. We enhanced and(More)
Experimental measurements of the second order susceptibilities for the second harmonic generation are reported for YAl 3 (BO 3) 4 (YAB) single crystals for the two principal tensor components xyz and yyy. First principle's calculation of the linear and nonlinear optical susceptibilities for Yttrium Aluminum Borate YAl 3 (BO 3) 4 (YAB) crystal have been(More)
The electronic structure, linear and nonlinear optical properties have been calculated for CuInX 2 (X = S, Se, Te) chalcopyrite-structure single crystals using the state-of-the-art full potential linear augmented plane wave (FP-LAPW) method. We present results for band structure, density of states, and imaginary part of the frequency-dependent linear and(More)
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