Diffractive Aspheric Lenses are flat optical elements that generate an aspheric wavefront. Such diffractive aspheric lenses serve as null lenses in precision interferometric tests for manufacturing high quality refractive aspheric lenses. They are also used as aspheric elements in optical systems with unique aberration compensation properties.
Why make one mark several times, when you can make many marks all at once by using a beam splitter. These diffractive optics split the light path into multiple channels resulting in an increase of efficiency and throughput by a factor of N times. Each new beam is deflected by a precise angle, giving you Read More
A Diffractive diffuser is a type of diffractive optic that can take a laser beam and redistribute the light into virtually any pattern desired. These types of optics are used when the light source is monochromatic. Diffusers have a tightly controlled angle providing high efficiency. They are not sensitive to alignment and do not affect Read More
Beam shapers transform or shape light into any configuration. These elements are near-field diffractive optics that use a single order so they are entirely free of speckle and can even be re-collimated. Beam shapers take a non-uniform and Gaussian beam with its peak and long tails and turns it into a shape that better suits Read More
Line Generator Optics use a single, flat element to transform a Gaussian beam into a homogenous top-hat line profile. This method offers increased efficiency for any materials processing application such as annealing or re-crystallization of semiconductors or thin layers. Line Generator Optics achieve good uniformity with high efficiency while maintaining high damage threshold. Custom designs Read More
Lasers such as excimer, nitrogen or diode lasers can use diffusers to transform their non-Gaussian laser beams into well-defined, reproducible Gaussian far-field profiles. Together with a focusing lens, a Gaussian spot is generated at the focal plane with a diameter to be calculated as Gaussian divergence times focal length of the lens.
The bending of light by gratings is described by the well- known, grating equation: d(Sin ?m (?) + Sin ?i ) = m? Gratings can be binary or kiniform structures that control the diffraction angle based on the period. Gratings offer the advantage of being thin, produced in many materials, and can be operated in Read More
Dielectric Diffractives Dielectric diffractive polarizers are subwavelength gratings produced through the use of nanolithography. TE illumination results in diffraction of equal amounts into the ±1 orders while TM illumination remains in the zero order. Custom designs are available depending on the wavelength and application.