Laser-induced fluorescence - Wikipedia
Laser-induced fluorescence (LIF) or laser-stimulated fluorescence (LSF) [1] is a spectroscopic method in which an atom or molecule is excited to a higher energy level by the absorption of laser light followed by spontaneous emission of light.
What is Laser Induced Fluorescence? | LIF Experiment
2021年2月18日 · Laser Induced Fluorescence (LIF) is an optical spectroscopic technique where a sample is excited with a laser, and the fluorescence emitted by the sample is subsequently captured by a photodetector.
What is Laser-Induced Fluorescence (LIF)? Laser-induced spontaneous emission. Multi-step process: absorption followed by emission (fluorescence) Possible collisional change This is the laser- 2 induced fluorescence. hν (spont. Emission) = LIF signal Laser absorption (pulsed or CW laser) 1. Notes. May occur from multiple states. Not instantaneous.
Laser-Induced Fluorescence (LIF) Fluorescent dyes (molecules) can absorb light at one frequency and subsequently re-emit (fluoresce) light at a different frequency. In experiments, the dyes are excited by laser light whose frequency closely matches the excitation frequency of …
Laser-Induced Fluorescence | Hanson Research Group
Laser-induced fluorescence (LIF) is a diagnostic technique leveraging the spontaneous emission of light from an excited atom or molecule. A target chemical species such as carbon dioxide (CO 2), hydroxyl (OH), nitric oxide (NO), or potassium (K) is …
Laser-Induced Fluorescence - SpringerLink
2014年1月1日 · Laser-induced fluorescence (LIF) is a nonintrusive visualization technique that can instantaneously detect the fluorescence of fluorescent molecules to show their concentration, density, temperature, velocity, and even pressure.
Laser-Induced Fluorescence - SpringerLink
This chapter discusses the theory and practical application of laser-induced fluorescence (LIF). Fluorescence, generally, is just another name for spontaneous emission. LIF is a two-step process: (1) absorption of the laser photon, followed by (2) emission. Download chapter PDF.
Laser-Induced Fluorescence - SpringerLink
2014年10月15日 · Laser-induced fluorescence plays an important role as an analytical method for biological measuring objects. These include routine analytics, fluorescence microscopy, clinical diagnostics, the control of chemical or pharmaceutical reactions or basic research.
Laser Induced Fluorescence & Raman Scattering | Advanced Lab
In this laboratory the techniques of absorption, laser induced fluorescence and scattering are used to study rotational, vibrational, and electronic energy levels of the ground and excited electronic states of diatomic molecular iodine, oxygen, and nitrogen.
Planar Laser-Induced Fluorescence | Hanson Research Group
Planar laser induced fluorescence (PLIF) extends the concepts and capabilities of laser induced fluorescence (LIF) to two dimensions. The experimental setup is similar to LIF, except the laser beam is expanded into a planar sheet, exciting a 2-D plane of the target species in the flow field.