Ultrafast laser-induced electron emission from multiphoton to optical tunneling
Based on a time-dependent quantum model, a relation between the onset of the optical tunneling regime and the metal work function is determined. In the multiphoton regime, the number of photons required for absorption is reduced from n=3 (at pulse length τ>20 fs) to n=2 (at τ<8 fs) due to the...
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Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
2013
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/95464 http://hdl.handle.net/10220/9126 |
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Institution: | Nanyang Technological University |
Language: | English |