Youve already discovered the joys of owning one of the most powerful lasers in the known universe. Using a simulation software opticstudio, zemax llc, kirkland, wa, usa in. Since beam expanders are afocal systems, make sure afocal image space is checked in the zemax lens data editor. Low power beam expanders may have a return reflection that is not suitable with high power lasers. We provide the solidstate laser industry with comprehensive selection of laser lamp available. The first lens has a focal length f 25 mm and the beam is expanded by a factor of 4. Beam expander is an optical component used in laser industry for expansion of beam. Laser beam intensification due to either electromagnetic boundary conditions at crack walls or to total internal reflection at cracks and free surfaces along with. The expander also has an adjustable focus, which lets you choose exactly how precise you want your laser to be at any given distance. This will change the units of the metrics to be angular rather than distances. Beam expander is commonly used to magnify the laser diameter to be focused back in smaller spot size.
Jul 21, 2016 beam expanders are required in most laser systems to change the diameter of the incoming source to match the requirement of the optical system. A beam expander is any optical system designed to increase the diameter of a laser beam. These galilean beam expanders have threaded input and output apertures, which allow additional lenses and filters to be installed easily along the optical axis of the beam expander. Standa diffraction limited galilean type laser beam expanders offer variable magnification of 2x12x other ranges also available with adjustable focus to correct laser beam divergence. Beam expanders consist of two lenses that are built according to the galileo principle and therefore do not generate an intermediate focus. In size restricted applications, it is desirable to use a compact beam expander but in most. Alignment aids are provided to ensure correct beam pointing. These reflective, offaxis, nonobstructing laser collimating telescopes are manufactured in four standard output beam diameters. Beam expanders have two main purposes in the laser industry. Reflective coatings can be specified as protected gold, silver, or dielectric for high laser damage resistance. The laser lamp is arranged accordingly to use in the various types laser machines in. The beamexpanders are of galilean design and use multispectral zinc sulphide for the optics which has an absorbption at 1. Unpaid dispute will be filed to ebay for any non payable bidders. In this example, we optimized for 3mm input beam and the output beam will be 15mm.
The angular convergence for both configurations is. Find great deals on ebay for beam expander and laser beam expander. If the beam expands a lot during the propagation, it exceeds the grid. This entry was posted in laser optics and tagged co2 laser, co2 laser mirror, co2 laser optics, collimation, collimator, gaussian beam, gold coated mirrors, gold coating, infra red, laser mirror, rayleigh range, reflective beam expander, spherical mirrors, waist location, zemax by lbp optics. How to design your own beam expander using stock optics. Beam expanders for co2 lasers lens systems laser components.
Optical surfaces ltd osl has introduced its range of laser beam expanders, providing a proven means of focusing and shaping laser beams with a high degree of accuracy. Development of a monitoring strategy for lasertextured metallic. We accept paypal or bank transfer or wu payment must be made within 5 days after the end of auction. The lenses in the uv fused silica beam expanders have one of five ar coatings deposited on both sides of each optic in the beam expanders to minimize reflections at the airtoglass interfaces. Yag and yb doped fibre lasers operating near the 1. About 5% of these are lenses, 1% are laser cutting machines. Eo investigated many different materials and mounting options to prevent cracking optics and outgassing adhesives at the extremely high. I thought beam expanders increased a laser beams size.
Dioptika beam expander, beam expanders, laser expander. A wide variety of laser beam expander lens options are available to you, such as spherical, aspheric, and plano. Laser lamp trace pro, oslo, optiwave design consultancy. Optical design fundamentals for infrared systems researchgate. There are many ready made beam expanders available on the market, but often they are not available in the required expansion ratio or spectral range. Afocal systems dont have an effective focal length and thus provide no net convergence or divergence of the incident light beam. A beam expander is a set of lenses which reduces the beam size over long distances by expanding the beam at aperture since laser beams do expand over long distances and loses its brightness as far as the beam travels. The beam expander incorporates two lenses with a spatial filter to provide the highest beam quality.
Department, fraunhofer institute of material and beam technology iws, winterbergstr. Keplerian beam expanders are designed so that the collimated input beam focuses to a spot between the objective and image lenses, producing a point within the system where the laser s energy is concentrated figure 3. Co2 laser beam expander reflective beam expander suntec. Beam expanders are delivered with a set of removable alignment mirrors or targets enabling alignment to an input beam. Highquallity and great priced laser zoom co2 beam expander. If youre designing any sort of optical equipment, such as camera lenses, microscopes, or telescopes, youll need a sequential ray tracing model. With special optics motorized zoom beam expanders, variable magnification levels can automatically be set ranging from 1x4x.
Automated transmitter beam size and divergence control in. Laser beam shaping applications laser beam shaping in array. How to build a beam expander beam expansion or reduction is a common application requirement in most labs using lasers or light sources and optics. Laser beam expander with diopter movement 1064nm 10x. Customize focusing system beam expander collimator for. Laser beam expander lens, laser beam expander lens suppliers. Customize focusing system beam expander collimator for civillasers laser. Co2 laser beam expander reflective beam expander suntec laser.
It is used for various applications such as laser scanning, interferometry, and remote sensing. Our zoom beam expanders or called as variable beam expander are highly corrected 4lens element systems with variable magnification from 1x up to 8x and galileidesign. These beam expanders can be conveniently attached to most hene lasers with the 2 accessory thread and except for the t8x, are equipped with precision beam centering adjustments to compensate for slight decentrations of the entering laser beam. Translation mount for laser beam expandercollimator.
It is important to remember that m is positive for the cassegrain expander and negative for the gregorian. At maximum range, the beam expander makes it possible for you to pinpoint whatever you like, without losing the sharpness of the beam or the original power of your spyder 3 laser. If youre looking for laser optic system components, visit optical components suppliers and manufacturerssuntec. Compact beam expanders that do not sacrifice laser beam diameter. Beam expander, laser beam expander hyperion optics. Laser protection class is also maintained as continuous opening of the machine is no longer required. Special optics high power beam expanders are specifically designed with a convex first surface, which diverges the return reflection from the first lens surface and prevents any damage backstream of the beam expander. Using zemax software the lens aberration can be estimated theoretically with the. Translation mounts are designed for the critical alignment of transmissive optics, such as placing a beam collimator within a preexisting beam path.
Spherical mirrors for collimation laser beam products. If you need to be able to adjust the size of the spot, you can add this custom function. In size restricted applications, it is desirable to use a compact beam expander but in most cases a compact beam expander is only suitable for small diameter beams. These beam expanders are light weight and short bodied and because they are galileo type design, they have little aberration and correction. Mar 01, 2012 this entry was posted in laser optics and tagged co2 laser, co2 laser mirror, co2 laser optics, collimation, collimator, gaussian beam, gold coated mirrors, gold coating, infra red, laser mirror, rayleigh range, reflective beam expander, spherical mirrors, waist location, zemax by lbp optics. Our adjustable focus beam expander makes it possible to reduce the diameter of your lasers beam at maximum range increasing the effective range of. Usually the focal length of the dpss laser semiconductor laser is fixed. Opticstudio is the only tool you need sequential ray tracing.
Are zemax files or prescription data available for condenser lenses. Beam expander design zemax september 15, 2018 by arfan leave a comment investigation and design of short range e optical simulation design of collimation zoom optical system based doe expander holo or diffractive optics advanced thorlabs optical beam expanders expansion or optics how to build a beam expander. Co2 laser beam expander can improve beam collimation characteristics. Cw laser beam expanders galilean design works well for any visible or nearir laser system as a great general purpose beam expander. Simulation of wave front propagation with zemax sara casalbuoni and rasmus ischebeck desy. This variability helps to reduce machine set up times and provides flexibility to equipment for a wide range of jobs. Dec 01, 2017 beam expanders consist of transmissive configurations, with galilean or keplerian designs, and reflective configurations, which use a series of mirrors, similar to microscope designs. Options include vacuum compatible and motorized remote alignment.
At maximum range, the beam expander makes it possible for you to pinpoint whatever you like, without losing the sharpness of. Find details of companies offering laser beam expander at best price. The beam expander can change the diameter of laser and lens assembly of divergence angle. For the laser processing, only by adjusting the beam expander, the laser beam can be changed into collimated parallel beam, and the fine resolution highdensity facula can be. These systems are suited for typical medium power levels of up to.
My objective is to use a small halogen filament bulb and end up with a beam of light. The laser beam emitted from the laser has a certain divergence angle. For 532 nm the damage threshold for expanders with fused silica on the input and optical glass on the output is 2. However, due to the serial processing of multiple images or the scanning.
High cw damage threshold makes this ideal for cw laser processing applications. Lambdaten optics laser beam expanders provide superior system wavefront and, therefore, low divergence output. Choose cots beam expander with adequate exit aperture 40cm30. Beam expanders consist of transmissive configurations, with galilean or keplerian designs, and reflective configurations, which use a series of mirrors, similar to microscope designs. Oct 31, 2012 standa diffraction limited galilean type laser beam expanders offer variable magnification of 2x12x other ranges also available with adjustable focus to correct laser beam divergence. Each offaxis beam expander is housed in an aluminium housing with provision for fixing to an optical table. Designing a beam expander from offtheshelf lenses can drastically reduce lead time and. Beam expander is a kind of optical system composed of two or more elements, it can adjust the size of laser beam and its divergent characteristics. Beam expander scanning mirror telecentric lens beam shaper.
Laser beam expanders designed to use with high powered lasers that are made of lenses attached together without using glue airgap. The graphs below show the reflectance per surface as a function of wavelength over an extended wavelength range. Influence of subsurface cracks on laser induced surface. The beam expander s primary function is to optimize spot size at the focusing lens. The angular spectrum propagator is suitable for cases where the beam diameter does not change significantly, i. Beam expanders aperture optical sciences optical components. Here, we just set up the aperture of the lens system 10mm, much bigger than the 1. We are able to provide expansion from 1 x to 50 x fixed magnification. Although the galilean beam expander increases the input laser beam by a. Spherical mirrors used in laser beam expander for collimation our gold coated mirrors have high reflectivity in the visible and infra red so a visible laser can be used to safely align the beam expander.
All lenses are antireflection coated for their specific wavelengths yielding transmissions over 98%. The aperture value in zemax must be set to the input beam diameter over which you want to optimize your design. Expander 10x adjustable focus laser beam expander wicked. Diffractive beam splitters from sintec effectively separate a single incident laser beam into multiple nonoverlapping beams. The input lens presents a virtual beam focus at the output. The input of each beam expander has internal sm05 0. X3 beam expander the x3 beam expander is explicitly made for our handheld lasers. For low expansion ratio, the galilean telescope is most often employed due to simplicity, small package size and low cost. Exercises lecture optical design with zemax part 4 4. In most cases, the term is taken to mean a telescope designed to take a smalldiameter collimated beam input beam and produce a larger diameter collimated output beam, thus reducing the divergence of the beam. Beam expanders are required in most laser systems to change the diameter of the incoming source to match the requirement of the optical system. Usually the focal length of the dpss lasersemiconductor laser is fixed. In a laser beam expander, the placement of the objective and image lenses is reversed.
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