1) waves couple
The model of waves couple is a simplified mathematical model for nonlinear physics.
2) two-wave mixing
Research in SNR of two-wave mixing in photorefractive Cu:KNSBN crystal;
3) two waves coupling
The influence of the modulation frequency on gain(G) of two waves coupling in Ce:KNSBN crystal is studied.
The beam fanning in Ce:KNSBN crystal versus the incident light parameter was studied by a synchronous data recording system, and two waves coupling and image storage in Ce:KNSBN crystal were investigated with the 532nm or 632.
Effect of pump beam polarization on two waves coupling gain was researched by using a non-synchronously-numerating experimental system,and the incident beam wavelength is 532 nm which originates from single frequency solid leaser.
4) two-wave coupling
The photorefractive properties of the Ce:Fe:LiNbO 3crystals were experimentally studied by using the two-wave coupling method.
In two-wave coupling experiments,writing and erasure curves were measured,and writing time constants,erasure time constants,and maximum diffraction efficiency of the crystals were obtained from the curves.
the relationship between two-wave coupling gain and carrier concentration in photorefractive LiNbO3 crystal is analyzed.
5) two-wave coupling
8nm laser beam in the Cr:KNSBN crystal,the transmitted intensity of pump beam and signal beam as a function of time in the two-wave coupling process were experimentally investigated,and the transmitted intensity of pump beam as a function of time was also investigated when the signal beam was shutted.
While the writing beam was extraordinary polarization and ordinary polarization respectively,we experimentally studied the response time of two-wave coupling in Ce:KNSBN crystal with respect to the experimental parameters such as the total incident intensity,the intensity ratio of two writing beams,and the angle between two writing beams.
在写入光分别为e光和o光时 ,实验测量了Ce :KNSBN晶体两波耦合响应时间与总写入光强、写入光强比和写入光夹角的关系 ,实验数据与理论拟合结果相吻合 ,并由晶体响应时间特性获得了晶体有效电光系数和有效光折变电荷密度参数。
The dynamical process of two-wave coupling in photorefractive LiNbO3: Fe crystal while the signal beam and the pump beam are non-simultaneously opened,and the signal gain as a function of the opening time are studied experimentally.
6) two-beam coupling
Pulsation features of the diffraction beam in the phase-shifted refractive index grating under electric field was studied in C_(60)-doped nematic liquid crystal by two-beam coupling experiment.
The photorefractive properties of these materials were measured by using two-beam coupling (TBC) and four-wave mixing (FWM) techniques and interpreted in term.
The character of the two-beam coupling and the four-wave coupling in BSO is investigated in this thesis.