%0 Journal Article
%T Ultrafast Laser Energy Density and Retinal Absorption Cross-Section Determination by Saturable Absorption Measurements
%A Alfons Penzkofer
%A Meike Luck
%A Tilo Mathes
%A Peter Hegemann
%J Journal of Analytical Sciences, Methods and Instrumentation
%P 19-26
%@ 2164-2753
%D 2014
%I Scientific Research Publishing
%R 10.4236/jasmi.2014.41003
%X <p style=\"text-align:justify;\">
	<span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">Laser pulse nonlinear transmission
measurements through saturable absorbers of known absorption parameters allow
the measurement of their energy density. On the other hand</span><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">,</span><span style=\"font-size:10.0pt;line-height:97%;font-family:;\" \"=\"\"><span style=\"font-family:Verdana;font-size:14px;\"> nonlinear transmission
measurements of laser pulses of known energy density through absorbing media allow
their absorption parameter determination. The peak energy density </span><i><span style=\"font-family:Verdana;font-size:14px;\">w</span></i><sub><span style=\"font-family:Verdana;font-size:14px;\">0P</span></sub><span style=\"font-family:Verdana;font-size:14px;\"> of second harmonic pulses
of a mode-locked titanium sapphire laser at wavelength </span></span><i><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">¦Ë</span></i><sub><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">P</span></sub><span style=\"font-size:10.0pt;line-height:97%;font-family:;\" \"=\"\"><span style=\"font-family:Verdana;font-size:14px;\"> = 400 nm is determined by nonlinear energy transmission measurement </span><i><span style=\"font-family:Verdana;font-size:14px;\">T</span></i><sub><span style=\"font-family:Verdana;font-size:14px;\">E</span></sub><span style=\"font-family:Verdana;font-size:14px;\"> through the dye ADS084BE
(1,4-bis(9-ethyl-3-car</span></span><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">-</span><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">bazovinylene)-2-methoxy-5-(2¡¯-ethyl-hexyloxy)-benzene)</span><span style=\"font-size:10.0pt;line-height:97%;font-family:;\" \"=\"\"> </span><span style=\"font-size:10.0pt;line-height:97%;font-family:;\" \"=\"\"><span style=\"font-family:Verdana;font-size:14px;\">in tetrahydrofuran. </span><i><span style=\"font-family:Verdana;font-size:14px;\">T</span></i><sub><span style=\"font-family:Verdana;font-size:14px;\">E</span></sub><span style=\"font-family:Verdana;font-size:14px;\">(</span><i><span style=\"font-family:Verdana;font-size:14px;\">w</span></i><sub><span style=\"font-family:Verdana;font-size:14px;\">0</span></sub></span><sub><span style=\"font-size:14px;line-height:97%;font-family:Verdana;\">P</span></sub><span style=\"font-size:10.0pt;line-height:97%;font-family:;\" \"=\"\"><span style=\"font-family:Verdana;font-size:14px;\">)
calibration curves are calculated for
%K Laser Pulse Peak Energy Density Determination
%K Ground-State Absorption Cross-Section Determination
%K Excited-State Absorption Cross-Section Determination
%K Saturable Absorption
%K ADS084BE Dye
%K Histidine Kinase Rhodopsin HKR1
%K Retinal Schiff Base RetA Cofactor
%K Number Density Determination
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=44199