报道了甘肃省菊科植物的3个分布新记录属,母菊属(Matricaria),联毛紫菀属(Symphyotrichum)和艾纳香属(Blumea),以及3个甘肃省分布新记录种,同花母菊[Matricaria matricarioides(Lessing)Porter ex Britton],钻形紫菀[Symphyotrichum sub...报道了甘肃省菊科植物的3个分布新记录属,母菊属(Matricaria),联毛紫菀属(Symphyotrichum)和艾纳香属(Blumea),以及3个甘肃省分布新记录种,同花母菊[Matricaria matricarioides(Lessing)Porter ex Britton],钻形紫菀[Symphyotrichum subulatum(Michaux)G.L.Nesom]和柔毛艾纳香[Blumea axillaris(Lamarck)Candolle]。展开更多
The capabilities of a compact and highly efficient NdAl 3 （BO 3） 4 （NAB） thin-disk laser are demonstrated.Under a pump power of 8.2 W,the NAB disk laser delivers an average output power of 4.6 W at 1 063 nm,with a...The capabilities of a compact and highly efficient NdAl 3 （BO 3） 4 （NAB） thin-disk laser are demonstrated.Under a pump power of 8.2 W,the NAB disk laser delivers an average output power of 4.6 W at 1 063 nm,with a slope efficiency of 64%.The difficulty and complexity of the thin-disk laser design are minimized by the high absorbance of the NAB crystal.To reduce the thermal effect,low repetition frequency pulsed 885 nm direct pumping is considered an efficient way to realize a compact and highly efficient NAB thin-disk laser.展开更多
基金supported by the State Key Development Program for Basic Research of China (No. 2010CB630706)the National Natural Science Foundation of China
文摘The capabilities of a compact and highly efficient NdAl 3 （BO 3） 4 （NAB） thin-disk laser are demonstrated.Under a pump power of 8.2 W,the NAB disk laser delivers an average output power of 4.6 W at 1 063 nm,with a slope efficiency of 64%.The difficulty and complexity of the thin-disk laser design are minimized by the high absorbance of the NAB crystal.To reduce the thermal effect,low repetition frequency pulsed 885 nm direct pumping is considered an efficient way to realize a compact and highly efficient NAB thin-disk laser.
