We utilized a set of fused silica thin plates to broaden the spectrum of 1kHz,30 fs Ti:sapphire amplified laser pulses to an octave.Following the compression by chirped mirror pairs,the generated few-cycle pulses were...We utilized a set of fused silica thin plates to broaden the spectrum of 1kHz,30 fs Ti:sapphire amplified laser pulses to an octave.Following the compression by chirped mirror pairs,the generated few-cycle pulses were focused onto an argon filled gas cell.We detected high order harmonics corresponding to a train of 209 as pulses,characterized by the reconstruction of attosecond beating by interference of two-photon transition(RABITT)technique.Compared with the conventional attosecond pulse trains,the broad harmonics in such pulse trains cover more energy range,so it is more efficient in studying some typical cases,such as resonances,with frequency resolved RABITT.As the solid thin plates can support high power supercontinuum generation,it is feasible to tailor the spectrum to have different central wavelength and spectral width,which will make the RABITT source work in different applications.展开更多
上世纪90年代后期以来,“在路上”成为中国文学界的流行话语,它源于“垮掉的一代”(BG)作家凯鲁亚克的小说《在路上》(On the Road),其起源语境、语义与BG相关。小说中BG伙伴横穿美国,在路上酗酒、吸毒、滥交,反抗美国现存体制,体验主...上世纪90年代后期以来,“在路上”成为中国文学界的流行话语,它源于“垮掉的一代”(BG)作家凯鲁亚克的小说《在路上》(On the Road),其起源语境、语义与BG相关。小说中BG伙伴横穿美国,在路上酗酒、吸毒、滥交,反抗美国现存体制,体验主流文化之外另一种生活。他们为一种莫名的想望不知疲倦地奔走,在疯狂中感觉自我,所以“在路上”语义非常复杂。中国移植者将它从其起源语境中剥离出来,抽空其原义,对其作望文生义的理解,使其抽象化、普泛化,弱化了它对于中国文化建构的价值与意义。展开更多
This paper studies post-war America around the 1950's when On the Road was written and analyzes the protagonist Dean Moriarty as a spokesman of the Beat Generation.He is a typical beat who revolts against the trad...This paper studies post-war America around the 1950's when On the Road was written and analyzes the protagonist Dean Moriarty as a spokesman of the Beat Generation.He is a typical beat who revolts against the traditional social values and chases after the spiritual complacency.In addition,he opposes wars and advocates the equality between men and women.Thus in a sense Dean is a rebellious hero and stands ahead of his age.展开更多
As an important figure of the Beat Generation,the literature works of Allen Ginsberg have a huge influence on contemporary literature.Ever since the sensational publishing of Howl in the mid-1950s,the poetry of Ginsbe...As an important figure of the Beat Generation,the literature works of Allen Ginsberg have a huge influence on contemporary literature.Ever since the sensational publishing of Howl in the mid-1950s,the poetry of Ginsberg has been recognized for the language use which expresses violence,lusts,taboos;as well as the combination of large numbers of imaginaries that seem unrelated.In Ginsberg’s works,the components of religions and drugs are considered as large and important parts and help to express the theme or emotions of the poems.The interpretation of those elements is related to Ginsberg’s personal memory and emotions,hence,in many of his works,Ginsberg had different attitudes towards them,and used them as different methods of expression.展开更多
基金Project supported by the National Key R&D Program of China(Grant No.2017YFB0405202)the Major Program of the National Natural Science Foundation of China(Grant No.61690221)+1 种基金the Key Program of the National Natural Science Foundation of China(Grant No.11434016)the National Natural Science Foundation of China(Grant Nos.11574384,11674386,and 11774277)
文摘We utilized a set of fused silica thin plates to broaden the spectrum of 1kHz,30 fs Ti:sapphire amplified laser pulses to an octave.Following the compression by chirped mirror pairs,the generated few-cycle pulses were focused onto an argon filled gas cell.We detected high order harmonics corresponding to a train of 209 as pulses,characterized by the reconstruction of attosecond beating by interference of two-photon transition(RABITT)technique.Compared with the conventional attosecond pulse trains,the broad harmonics in such pulse trains cover more energy range,so it is more efficient in studying some typical cases,such as resonances,with frequency resolved RABITT.As the solid thin plates can support high power supercontinuum generation,it is feasible to tailor the spectrum to have different central wavelength and spectral width,which will make the RABITT source work in different applications.
文摘上世纪90年代后期以来,“在路上”成为中国文学界的流行话语,它源于“垮掉的一代”(BG)作家凯鲁亚克的小说《在路上》(On the Road),其起源语境、语义与BG相关。小说中BG伙伴横穿美国,在路上酗酒、吸毒、滥交,反抗美国现存体制,体验主流文化之外另一种生活。他们为一种莫名的想望不知疲倦地奔走,在疯狂中感觉自我,所以“在路上”语义非常复杂。中国移植者将它从其起源语境中剥离出来,抽空其原义,对其作望文生义的理解,使其抽象化、普泛化,弱化了它对于中国文化建构的价值与意义。
文摘This paper studies post-war America around the 1950's when On the Road was written and analyzes the protagonist Dean Moriarty as a spokesman of the Beat Generation.He is a typical beat who revolts against the traditional social values and chases after the spiritual complacency.In addition,he opposes wars and advocates the equality between men and women.Thus in a sense Dean is a rebellious hero and stands ahead of his age.
文摘As an important figure of the Beat Generation,the literature works of Allen Ginsberg have a huge influence on contemporary literature.Ever since the sensational publishing of Howl in the mid-1950s,the poetry of Ginsberg has been recognized for the language use which expresses violence,lusts,taboos;as well as the combination of large numbers of imaginaries that seem unrelated.In Ginsberg’s works,the components of religions and drugs are considered as large and important parts and help to express the theme or emotions of the poems.The interpretation of those elements is related to Ginsberg’s personal memory and emotions,hence,in many of his works,Ginsberg had different attitudes towards them,and used them as different methods of expression.
