scholarly journals Precise and highly-sensitive Doppler-free two-photon absorption dual-comb spectroscopy using pulse shaping and coherent averaging for fluorescence signal detection

2018 ◽  
Vol 26 (7) ◽  
pp. 8957 ◽  
Author(s):  
Akiko Nishiyama ◽  
Yoshiaki Nakajima ◽  
Ken’ichi Nakagawa ◽  
Kaoru Minoshima
Keyword(s):  
Signal Detection ◽  
Pulse Shaping ◽  
Photon Absorption ◽  
Fluorescence Signal ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Coherent Averaging ◽  
Highly Sensitive

scholarly journals How to optimize the absorption of two entangled photons

2021 ◽  
Vol 4 (4) ◽  
Author(s):  
Edoardo Carnio ◽  
Andreas Buchleitner ◽  
Frank Schlawin
Keyword(s):  
Pulse Shaping ◽  
Absorption Efficiency ◽  
Photon Absorption ◽  
Spatial Light Modulators ◽  
Schmidt Decomposition ◽  
Maximum Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Light Modulators ◽  
Down Conversion

We investigate how entanglement can enhance two-photon absorption in a three-level system. First, we employ the Schmidt decomposition to determine the entanglement properties of the optimal two-photon state to drive such a transition, and the maximum enhancement which can be achieved in comparison to the optimal classical pulse. We then adapt the optimization problem to realistic experimental constraints, where photon pairs from a down-conversion source are manipulated by local operations such as spatial light modulators. We derive optimal pulse shaping functions to enhance the absorption efficiency, and compare the maximal enhancement achievable by entanglement to the yield of optimally shaped, separable pulses.

scholarly journals A theoretical investigation of the two-photon absorption and fluorescent properties of coumarin-based derivatives for Pd2+ detection

RSC Advances ◽  
2017 ◽  
Vol 7 (78) ◽  
pp. 49505-49517 ◽  
Author(s):  
Chun Zhang ◽  
Jing-Fu Guo ◽  
Ai-Min Ren ◽  
Dan Wang
Keyword(s):  
Theoretical Investigation ◽  
Fluorescent Probes ◽  
Photon Absorption ◽  
Fluorescence Signal ◽  
Fluorescent Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Turn On

Two-photon fluorescent probes that can detect Pd2+ according to the “turn-on” fluorescence signal are reported.

Improvement of signal detection selectivity and efficiency in two-photon absorption-induced photoacoustic microscopy

2014 ◽  
Author(s):  
Yoshihisa Yamaoka ◽  
Yoshinori Harada ◽  
Shigeru Nishino ◽  
Seiji Maehara ◽  
Shujiro Hamano ◽  
...  
Keyword(s):  
Signal Detection ◽  
Photon Absorption ◽  
Photoacoustic Microscopy ◽  
Two Photon Absorption ◽  
Two Photon
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