two kinds of bright epr entangled beams were experimentally generated by means of nondegenerate optical parametric amplifier ( nopa ) 利用非簡(jiǎn)并光學(xué)參量放大器從實(shí)驗(yàn)上產(chǎn)生了兩種明亮epr糾纏態(tài)光場(chǎng)。
in particular, the bosonic realizations of su ( 1, 1 ) lie algebra describe the degenerate and non-degenerate parametric amplifiers . and the linear dissipative process can also be described by this algebra 尤其是su(1,1)李代數(shù)的玻色子算符實(shí)現(xiàn)形式,可以描述簡(jiǎn)并參數(shù)放大器,非簡(jiǎn)并參數(shù)放大器及線性耗散過(guò)程。
we use the laser output ( 320 nm, 200 fs ) of optical parametric amplifier ( opa ) in < wp = 5 > an active passive mode-locked femtosecond ti-sapphire laser operating at a repetition rate of 1khz as a exciting resource to develop optically pumped stimulated emission of zno thin films . when rectangular stripe laser irradiates thin films, optical resonant cavity is naturally formed between two nanocrystallites along with the rectangular laser stripe and planar weveguide confines the light scattering 利用飛秒激光器作為光泵浦激發(fā)光源,研究了氧化鋅薄膜的光泵浦受激發(fā)射,當(dāng)條形光斑輻照薄膜樣品時(shí),將沿著光斑條由氧化鋅納米晶面自然地形成光學(xué)諧振腔,由于平面介質(zhì)波導(dǎo)結(jié)構(gòu)限制光散射,所以成功地觀測(cè)到二氧化硅襯底上的納米氧化鋅(zno)薄膜的紫外受激發(fā)射。