Laser Scattering Spectroscopy

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• ELDS - Enhanced Laser Diode Spectroscopy
  Laser Diode Spectroscopy (LDS) is a well known method for the sensitive detection and measurement of gases, with techniques including WMS (Wavelength Modulation Spectroscopy), FMS (Frequency Modulation Spectroscopy) and TTFMS (Two Tone Frequency Modulation Spectroscopy) being successfully employed...
• Coherent Anti-Stokes Raman Scattering Microspectrometer
  Coherent Anti-Stokes Raman Scattering (CARS) was first reported in 1965 by Maker and Terhune1 as a method of spectroscopy for chemical analysis. The energy diagram of the process is depicted in Figure 1. CARS involve the interaction of four waves designated as pump (p), Stokes (s), probe (p...
• Dynamic Light Scattering
  Dynamic light scattering or photon correlation spectroscopy (PCS) is used to determine the sizes of hydrodynamic particles by measuring the speed at which these particles diffuse in a base liquid. The suspended particles, excited into diffusing by Brownean motion, are subjected to laser beams...
• Download our new white paper: a glossary of dynamic light scattering terms
  There are a number of sources of information that give a mathematical. description of the terms used in light scattering. However, these will. not usually give assistance in understanding their use in the practical. application of the technique. (Ref, 1,2,3,4,5,6). The following list of terms gives...
• Raman Spectroscopy
  radiation is a challenging task. There are several reasons for this, including the weakness of the scattering, the intensity of the laser light, and often the closeness (in frequency) of the Raman-scattered light to the original laser light. Instruments require that the laser be of low noise and able...
• Advantages of Semiconductor Laser Diodes Versus Helium Neon Gas Lasers
  scattering and no. residual astigmatism. We at Power Technology, Inc. are one of the few HeNe power supply manufacturers capable of. providing you with laser diode modules to update your existing HeNe applications. If laser diode products are. of interest to you, please feel free to give one of our sales...
• Fivefactors to Consider When Choosing a Laser Diffraction Particle Size Analyzer (.pdf)
  . and particle size distribution measurements via analysis of par-. Of the many particle sizing methods on the market, laser dif-. ticles' light-scattering properties. The standard applies to laser. fraction is one of the most popular because it's a fast, nonde-. diffraction instruments measuring particle...
• Laser Diodes and Pigtailing
  Princetel's rotatable polarized light source. Back Scattering. All lasers are sensitive to optical back-scattering since it causes the laser frequency to drift and the power to subsequently vary due to the bell curve of the laser's gain profile. DFB (Distributed Feedback) lasers are particularly...
• Apple Quality s More Than Skin Deep
  hundreds of apples and peaches without taking a single bite. How did he do it? With a futuristic technology called imaging spectroscopy, or multispectral imaging, that uses laser beams to detect the sweetness and firmness of fruit. Michigan has a $100 million farmgate apple industry, the third largest...
• Rapid Microbiological Methods for a New Generation
  is a phenomenon in which the propagation of light is disturbed by its interaction with particles. In a Mie scattering particle detector, airborne particles intersect a light beam emanating from a laser diode. If the air is free of particles, a beam blocker at the center of the first convex lens...

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