Experimental research on GaAs photoconductive semiconductor switches triggered by laser diode

2012 ◽  
Vol 24 (3) ◽  
pp. 635-638
Author(s):  
吴朝阳 Wu Zhaoyang ◽  
陈志刚 Chen Zhigang ◽  
薛长江 Xue Changjiang ◽  
陆巍 Lu Wei ◽  
杨周炳 Yang Zhoubing
2007 ◽  
Vol 49 (9) ◽  
pp. 2232-2234
Author(s):  
Yanling Sun ◽  
Shunxiang Shi ◽  
Yanwu Zhu ◽  
Xin Wu

2010 ◽  
Vol 26-28 ◽  
pp. 1200-1203
Author(s):  
Wen Bing Yu ◽  
Chen Pen He

A high stable 9.2W and 12.06 ns pulse-width acousto-optic Q- switch solid- state green laser was reported. Through theoretical analysis and experimental research , the resonator was designed and optimized in order to compress pulse-width. In experiment , the double acousto-optic Q- switch was employed with single Nd:YVO4 rod and LBO crystal was applied for frequency doubling. The resonator is the flat-concave type. Under the pumping current of 30A ,a maximum green power of 9.2W was generated at 40kHz repetition rate and 8.164 ns pulse-width.


2009 ◽  
Vol 40 (2) ◽  
pp. 55-65 ◽  
Author(s):  
Thomas F. Pettigrew

This paper reviews the evidence for a secondary transfer effect of intergroup contact. Following a contact’s typical primary reduction in prejudice toward the outgroup involved in the contact, this effect involves a further, secondary reduction in prejudice toward noninvolved outgroups. Employing longitudinal German probability samples, we found that significant secondary transfer effects of intergroup contact exist, but they were limited to specific outgroups that are similar to the contacted outgroup in perceived stereotypes, status or stigma. Since the contact-prejudice link is bidirectional, the effect is inflated when prior prejudice reducing contact is not controlled. The strongest evidence derives from experimental research. Both cognitive (dissonance) and affective (evaluative conditioning) explanations for the effect are offered.


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