【预订】I Found the Answer: Do You Want to Live a Less Stressful
美国库房发货,通常付款后3-5周到货!
/ 1988-08-08
¥196.00
【预订】Investigating Second Language Communication Strategies
美国库房发货,通常付款后3-5周到货!
/ 2012-04-27
/ 暂无出版社信息
¥891.00
【预售 按需印刷】Rosie s Remedial Yoga (Full Color Edition
北京发货,付款后10天内发货
/ 2013-06-07
/ Xlibris
¥379.00
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预售 按需印刷Continuous-wave terahertz light from optical parametr
/ 2011-07-13
Continuous-wave (cw) optical parametric oscillators (OPOs) are working horses for spectroscopy for near and mid infrared wavelengths. However, in the terahertz frequency range (0.1 to 10 THz), the pump threshold for oscillation is larger than 100 W due to high absorptions and thus exceeds the power of standard cw single-frequency pump sources. In this thesis, the first cw OPO capable of generating terahertz radiation is demonstrated. To overcome thethreshold, the signal wave of a primary infrared process is resonantly enhanced to serve as a pump wave for a cascaded parametric process with one wave being at the terahertz frequency level. Such a device inhibits high potential for applications in areas like astronomy, telecommunications or high-resolution spectroscopy.
¥810.05
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