Tutorials

Focusing and Collimating

 

Technical Notes

As a first example, we look at a common application, the focusing of a laser beam to a small spot. The situation is shown in Figure 5. Here we have a laser beam, with radius y1 and divergence θ1 that is focused by a lens of focal length f. From the f...

Fiber Optic Basics

 

Tutorials

Optical fibers are circular dielectric wave-guides that can transport optical energy and information. They have a central core surrounded by a concentric cladding with slightly lower refractive index.

Gaussian Beam Optics

 

Technical Notes

The Gaussian has no obvious boundaries to give it a characteristic dimension like the diameter of the circular aperture, so the definition of the size of a Gaussian is somewhat arbitrary. Figure 1 shows the Gaussian intensity distribution of a typica...

Fiber Optic Coupling

 

Technical Notes

The problem of coupling light into an optical fiber is really two separate problems. In one case, we have the problem of coupling into multimode fibers, where the ray optics of the previous section can be used. In the other case, coupling into single...

Beam Shaping with Cylindrical Lenses

 

Technical Notes

Cylindrical Lenses focus or expand light in one axis only. They can be used to focus light into a thin line in optical metrology, laser scanning, spectroscopic, laser diode, acousto-optic, and optical processor applications. They can also be used to ...

Optics Formulas

 

Technical Notes

Light is a transverse electromagnetic wave. The electric E and magnetic M fields are perpendicular to each other and to the propagation vector k, as shown below. Power density is given by Poynting’s vector, P, the vector product of E and H. You can e...

FemtoOptics™ Low Dispersion Ultrafast Optics

 

Selection Guides

FemtoOptics™ is the premier optics product line at Newport which is specifically optimized for femtosecond pulse manipulation. It consists of innovative, high-quality, easy-to-use, cutting-edge optical components and assemblies including transmission...

Optical Mirror Guide

 

Selection Guides

Mirrors are probably the most commonly used optical elements in your lab, and their quality, performance, and reliability are key to the success of your experiment. That's why we provide a variety of mirrors so you can be assured to find what you nee...

Optical Materials

 

Technical Notes

Newport offers a wide variety of spherical and aspherical lenses made from BK 7, UV grade fused silica, Infrared grade Calcium Fluoride (CaF2), Magnesium Fluoride (MgF2), AMTR and Zinc Selenide materials. For applications in the visible and infrared ...

Polarization

 

Technical Notes

The interaction of light with the atoms or molecules of a material is wavelength dependent. A consequence of this dependence is the resonant interactions related to material dispersion. Another consequence of such resonant interaction is birefringenc...
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