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ÇëÎʸ÷λ¸ßÊÖ£¬pump effect ÊÇʲô¶«¶«£¿£¿Ã²ËƺÍÓ«¹âÓйأ¿£¿ÏÂÃæÊÇÕâ¸ö¶«¶«µÄ±³¾°£¬Ï£Íû¸÷λ°ï°ïæ¡£¡£¡£ÔÚ´Ëл¹ýÁË£¡£¡
The Ag cluster in solution has been prepared by a microwave high-pressure procedure. There is a maximum resonance Rayleigh scattering (RRS) peak at 425 nm (7.06¡Á10 14 Hz) and a smaller RRS peak at 850 nm (1/2¡Á7.06¡Á10 14Hz) by synchronous scattering at lex=lem£¨¼¤·¢²¨³¤=·¢É䲨³¤£©. It is a nonlinear optical medium. When scattering the emission wavelength (lem·¢É䲨³¤) as the excited wavelength (lex¼¤·¢²¨³¤) at 425 nm (7.06¡Á10 14 Hz), a maximum RRS peak was observed at 425 nm (7.06¡Á10 14Hz). A 1/2 fraction scattering peak at 850 nm (1/2¡Á7.06¡Á10 14Hz) was also investigated. When lex£¨¼¤·¢²¨³¤£© is at 850 nm(3.53¡Á10 14 Hz), a frequency-doubling scattering peak at 425 nm is observed, and a RRS peak is displayed at 850 nm (3.53¡Á10 14 Hz). When thelex is two times longer than the maximum RRS wavelength (the strongest wavelength of pump band lpb) of an atomic cluster, a nonlinear scattering frequency-doubling peak (lpb) exhibits at half of the lex£¨¼¤·¢²¨³¤£©, which is stronger than the RRS peak. This phenomenon is defined as pump effect.
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