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Optical Instrument

Optical Instrument > Picosecond Transient Absorption Spectroscopy System

picoTAS

picoTAS는 새로 개발된 RIPT(Randomly Interleaved Pulse Train) 방식을 사용하여 기존 방식으로는 측정하기 어려운 Gap Time Region(1~20 nanoseconds)을 포함한 다양한 시간 범위에서 발생하는 변화를 측정하는 데 매우 유용합니다.
또한 형광 신호를 제거하는 기능이 있어 기존에 측정할 수 없었던 다양한 Photo-induced reactions을 측정할 수 있습니다.

Features

Completely Covers Gap Time Region (1ns ~ 20ns)
Broadband Wavelength Coverage from VIS to NIR
Transient absorption measurement from 100 picosecond to millisecond
Removal of fluorescence signal
Asynchronous Operation
Compact Size / No Optical Bench Required (-ns model)

Applications

Observation of Transient Absorption Spectra of Excited Singlet/Triplet State
Measurement of Intersystem Crossing (ISC) Rate
Research of Electron Transfer, Charge Separation/Recombination Dynamics
Observation of Intermolecular Reaction, Excimer Generation etc.
Analysis of Dynamics of Artificial Photosynthesis, Solar Energy Cell, Organic EL

Specifications

Models		picoTAS-ns	picoTAS-ps
Method		RIPT method (Randomly Interleaved Pulse Train method)
Time Resolution (10% 90% rise time)		< 400 ps	< 100 ps
Delay Time resolution		10ps, 20ps, 50ps, 100ps, 200ps, 500ps, 1ns, 2ns, 5ns, 10ns, 20ns
Full scale		100 ns-2 ms
Wavelength Range		410-1600 nm
Automatic Control		wavelength scan, light intensity adjustment, shutter control
Sample Holder		solution (optical path length is 2 mm), thin film
Pump Light Source	Source	passive Q-SW microchip laser	picosecond mode-locked laser
	Wavelength	532nm and/or 355nm	532nm and/or 355nm and/or 266nm
	Pulse Width	< 350 ps	< 25 ps
	Pulse Energy	> 20 μJ	> 80 μJ
	Repetition Rate	100-1000 Hz (variable)	1000 Hz
Probe Light Source	Source	picosecond Supercontinuum Light Source
	Pulse Width	< 50-100 ps (dependent on wavelength)
	Repetition Rate	20 MHz ±5%
PC & Software	OS	Windows® 7/10
PC & Software	Function	Automatic reconstruction of transient absorption temporal profile, curve fitting (nonlinear least square method), data storage in text format
Installation Environment	no optical bench required	on optical bench

Contact Info

Optical Instrument

Optical Instrument > Picosecond Transient Absorption Spectroscopy System