TY - JOUR
T1 - Ultrafast dynamics of excited state in oxy-hemoglobin
AU - Kobayashi, Takayoshi
AU - Yabushita, Atsushi
PY - 2011/6/1
Y1 - 2011/6/1
N2 - We perform ultrafast transient absorption spectroscopy of oxy-hemoglobin by a pump-probe method with ultrashort laser pulses. Negative time-range of the observed traces, where the pump pulse precedes the probe pulse, is analyzed to study the electronic coherence dynamics between the excited state and the ground state, and the vibrational coherence in the electronic excited state. The analysis result shows that the electronic coherence between the electronic ground state and the Q-band state dephases in 45±5 fs. The vibrational dephasing times of modes with frequencies of 210, 393, 554, 731, and 1106 cm-1 are found to be 449, 366, 555, 1085, and >1330 fs, respectively.
AB - We perform ultrafast transient absorption spectroscopy of oxy-hemoglobin by a pump-probe method with ultrashort laser pulses. Negative time-range of the observed traces, where the pump pulse precedes the probe pulse, is analyzed to study the electronic coherence dynamics between the excited state and the ground state, and the vibrational coherence in the electronic excited state. The analysis result shows that the electronic coherence between the electronic ground state and the Q-band state dephases in 45±5 fs. The vibrational dephasing times of modes with frequencies of 210, 393, 554, 731, and 1106 cm-1 are found to be 449, 366, 555, 1085, and >1330 fs, respectively.
UR - http://www.scopus.com/inward/record.url?scp=79961186695&partnerID=8YFLogxK
U2 - 10.3788/COL201109.S10605
DO - 10.3788/COL201109.S10605
M3 - Article
AN - SCOPUS:79961186695
VL - 9
JO - Chinese Optics Letters
JF - Chinese Optics Letters
SN - 1671-7694
IS - SUPPL. 1
ER -