Title :
Femtosecond spectroscopy of rhodopsin and related materials
Author :
Kobayashi, Takehiko ; Taiji, M. ; Kim, Marn-Go ; Misawa, K.
Author_Institution :
Dept. of Phys., Tokyo Univ., Japan
Abstract :
Summary form only given. We report femtosecond spectroscopy of octopus rhodopsin over very wide spectral region of 400-1000 nm, which made it possible to determine the line constant of cis-trans isomerization to be about 400 fs. The first intermediate prime-rhodopsin was converted to bathorhodopsin with a time constant of 10-20 ps along with a blue shift of about 10 nm. We found a new absorption from the excited state and two different stimulated emissions.
Keywords :
excited states; high-speed optical techniques; infrared spectra; isomerisation; proteins; spectral line shift; stimulated emission; time resolved spectroscopy; visible spectra; 400 fs; 400 to 1000 nm; bathorhodopsin; blue shift; cis-trans isomerization; excited state; femtosecond spectroscopy; line constant; octopus rhodopsin; prime-rhodopsin; rhodopsin; spectral region; stimulated emission; time constant; Absorption; Biochemistry; Bonding; Chemical technology; Chemistry; Physics; Proteins; Retina; Spectroscopy; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 1996. QELS '96., Summaries of Papers Presented at the
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
1-55752-444-0
