Recent content by breezels

if the THG signal is close to the resonance absorption-band of some material , the third-order nonlinear susceptibility "X(3)" will become enhanced. Then for the same material , in stimulated Raman experiments, if the laser frequency is also close to its resonance absorption-band (stimulated...

Do you have an black iron plate ?It can block the beam instead of your hands.

third-order hyperpolarizability "γ" in nonlinear optics In nonlinear optics third-order hyperpolarizability of molecules "γ" is often measured by THG(third-harmonic generation) experiments. So third-order nonlinear susceptibility "X(3)" could be calculated from formula using the value of...

Yeah! This situation may occur.But sometimes a fused-silicon glass could withstand the intense power.

For example: nanosecond pump pulse lasers are used in my experiments--stimulated Raman scattering Experiment. As long as the pump intensity (W/cm^2) exceeds some threshold value( at least 1.0 MW/cm^2) , the stimulated Raman scattering would occur. For this case, the peak power is chosen. Right?

For pulse lasers, thers are two parameters describing its output power. One is "the average power",which equals to the product of the energy of single pulse and the pulse repetition rate(per.second.); the other is "the peak power", which is defined as the ratio of the energy of single puse to...

what is the left-hand material or the right-hand material? Is there some liquid that belongs to the left-hand or the right-hand? thank u...

because a experiment need that

light has two properties:particle and wave. In diffrent circumstances, one of the properties would behave in priority.

are there some molecules that can emit fluorescence in the visible band?

many biological molecule can emit fluorescence. but is the quantum field of these molecules large? can u give me some examples that the molecule emits strong fluorescence, such as beta-carotene? for this field ,i know little. thank u