1. The other is doing experiments with high harmonics generation . 2. At high peak powers the Kerr effect can cause high-order harmonic generation . 3. Second harmonic generation leads to doubling of the frequency of infrared carbon dioxide lasers. 4. High energy ultrashort pulses can be generated through high harmonic generation in a nonlinear medium. 5. In harmonic generation , multiple photons interact simultaneously with a molecule with no absorption events. 6. Optical rectification also occurs on metal surfaces by similar effect as surface second harmonic generation . 7. This group used Second-Harmonic Generation ( SHG ) and Two-photon excitation microscopy. 8. Second harmonic generation has been demonstrated as a method to read data written into a poled polymer matrix. 9. Its second harmonic generation ( SHG ) coefficient is about three times higher than Mohs hardness of about 5. 10. In surface second harmonic generation , the second harmonic signal is proportional to the square of the electric field.
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