Femtosecond Pump-Probe Spectroscopy - Revision history

Cmditradmin: /* Operation */

2011-06-22T21:07:17Z

Operation

← Older revision		Revision as of 14:07, 22 June 2011
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	=== Operation ===		=== Operation ===
	{{#ev:youtube\|~~nM8VkroEXRc~~}}		{{#ev:youtube\|mdNr6eVBJqk}}

	=== External Links ===		=== External Links ===
	*[http://www.ultrafastsystems.com/helios.htm Pump Probe Spectroscope from Ultrafast Systems]		*[http://www.ultrafastsystems.com/helios.htm Pump Probe Spectroscope from Ultrafast Systems]

Cmditradmin: /* Background */

2011-05-25T21:33:49Z

Background

← Older revision		Revision as of 14:33, 25 May 2011
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	=== Background ===		=== Background ===
	The Femtosecond Pump Probe ~~Spectrometer~~ Spectrometer is used to absorption of species in the excited state. It is sometimes called two dimensional spectroscopy because it provided temporal as well as spectral information.		The Femtosecond Pump Probe Spectrometer is used to measure absorption of species in the excited state. It is sometimes called two dimensional spectroscopy because it provided temporal as well as spectral information. Pump beam at a particular wavelength is pulsed on a sample just femtoseconds before another broad spectrum probe beam is pulsed on the sample. The probe beam is then analyzed for absorption by wavelength.

	=== Significance ===		=== Significance ===

Cmditradmin: /* Operation */

2011-05-25T21:31:13Z

Operation

← Older revision		Revision as of 14:31, 25 May 2011
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	=== Operation ===		=== Operation ===
			{{#ev:youtube\|nM8VkroEXRc}}

	=== External Links ===		=== External Links ===
	*[http://www.ultrafastsystems.com/helios.htm Pump Probe Spectroscope from Ultrafast Systems]		*[http://www.ultrafastsystems.com/helios.htm Pump Probe Spectroscope from Ultrafast Systems]

Cmditradmin: /* Significance */

2011-05-25T21:25:40Z

Significance

← Older revision		Revision as of 14:25, 25 May 2011
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	=== Significance ===		=== Significance ===
	Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror. The system to generate probe wavelengths in many regions of the spectrum (i.e. UV: 300 -600 nm and NIR: 800-1650 nm)		Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror. The system is able to generate probe wavelengths in many regions of the spectrum (i.e. UV: 300 -600 nm and NIR: 800-1650 nm)

	[[Image:fslayout.JPG\|thumb\|400px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]		[[Image:fslayout.JPG\|thumb\|400px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]

Cmditradmin: /* Significance */

2011-05-25T21:25:19Z

Significance

← Older revision		Revision as of 14:25, 25 May 2011
Line 10:		Line 10:

	=== Significance ===		=== Significance ===
	Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.		Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror. The system to generate probe wavelengths in many regions of the spectrum (i.e. UV: 300 -600 nm and NIR: 800-1650 nm)

	[[Image:fslayout.JPG\|thumb\|400px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]		[[Image:fslayout.JPG\|thumb\|400px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]

Cmditradmin: /* Significance */

2011-05-25T21:21:54Z

Significance

← Older revision		Revision as of 14:21, 25 May 2011
Line 12:		Line 12:
	Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.		Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.

	[[Image:fslayout.JPG\|thumb\|~~500px~~\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]		[[Image:fslayout.JPG\|thumb\|400px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]

	[[Image:Fsppgraph.jpg\|thumb\|400px\|right\|T<sub>d</sub> is the time delay between pump and probe. This allows you to study the spectral response during a complex decay pathway. ]]		[[Image:Fsppgraph.jpg\|thumb\|400px\|right\|T<sub>d</sub> is the time delay between pump and probe. This allows you to study the spectral response during a complex decay pathway. ]]
	[[Image:InPc_kinetics.jpg\|thumb\|~~300px~~\|Kinetics of exciting state ~~absorbtion~~ ]]
			[[Image:InPc_spectra.jpg\|thumb\|400px\|left\|Absorption spectra of excited state at various delays of the pump signal]]

			[[Image:InPc_kinetics.jpg\|thumb\|400px\|right\|Kinetics of exciting state absorbance at different wavelengths as a function of probe delay. ]]


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Cmditradmin: /* Significance */

2011-05-25T21:14:07Z

Significance

← Older revision		Revision as of 14:14, 25 May 2011
Line 12:		Line 12:
	Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.		Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.

	[[Image:fslayout.JPG\|thumb\|500px\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]		[[Image:fslayout.JPG\|thumb\|500px\|left\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]

			[[Image:Fsppgraph.jpg\|thumb\|400px\|right\|T<sub>d</sub> is the time delay between pump and probe. This allows you to study the spectral response during a complex decay pathway. ]]
			[[Image:InPc_kinetics.jpg\|thumb\|300px\|Kinetics of exciting state absorbtion ]]

	~~[[Image:Fsppgraph.jpg\|thumb\|400px\|T<sub>d</sub> is the time delay between pump and probe. This allows you to study the spectral response during a complex decay pathway. ]]~~
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Cmditradmin: moved Femtosecond Pump-Probe Spectroscropy to Femtosecond Pump-Probe Spectroscopy

2011-05-25T17:10:26Z

moved Femtosecond Pump-Probe Spectroscropy to Femtosecond Pump-Probe Spectroscopy

← Older revision	Revision as of 10:10, 25 May 2011
(No difference)

Cmditradmin: moved Femtosecond Pump Probe Spectrometer to Femtosecond Pump-Probe Spectroscropy

2011-05-25T17:08:34Z

moved Femtosecond Pump Probe Spectrometer to Femtosecond Pump-Probe Spectroscropy

← Older revision	Revision as of 10:08, 25 May 2011
(No difference)

Cmditradmin: /* Significance */

2011-03-24T17:35:08Z

Significance

← Older revision		Revision as of 10:35, 24 March 2011
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	=== Significance ===		=== Significance ===
	~~Species~~ are driven into the excited state ~~with use~~ a of pump laser and the spectral qualities are measured with ~~the help of~~ a probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds.		Chemical species are driven into the excited state by a of monochromatic pump laser and the spectral qualities are measured with a broad spectrum probe laser. Both the pump and probe are extremely short duration, about 100 femtoseconds. The delay between the pump and the probe is controlled by changing the length of the optical path with moveable mirror.

	[[Image:fslayout.JPG\|thumb\|500px\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]		[[Image:fslayout.JPG\|thumb\|500px\|The pump pushes the sample into the excited state. After a short delay the probe beam is passed through the same to measure absorption.Layout of pump probe spectrograph]]

	[[Image:Fsppgraph.jpg\|thumb\|400px\| ]]		[[Image:Fsppgraph.jpg\|thumb\|400px\|T<sub>d</sub> is the time delay between pump and probe. This allows you to study the spectral response during a complex decay pathway. ]]
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