Laser beam profiler with 4x beam expander and uv converter. Beam expander v5 onestop shop for lasers, laser parts. The materials application system allows a user to define a laser process, give the process a unique name and subsequently link. Beam expanders consist of two lenses that are built according to the galileo principle and therefore do not generate an intermediate focus. Galilean telescope design reduces length of beam expander and avoids intermediate focus. Beam expanders are designed to work with cmount threaded cameras that have 4. Introduction in this laboratory assignment, you will build two types of laser beam expander, based on galilean and keplerian lens configurations. Divergence is the angular spreading of light waves as they. The 4x beam expander is an expanding telescope that images the beam as it looks at 8mm from the end of the expander onto the ccd while enlarging the. The beam expander can change the diameter of laser and lens assembly of divergence angle. Beam expander optics software free download beam expander. The motorized beam expander offers an expansion range from 2x to 8x.
The power density is increased by the square of the reduction factor, so that the possibility of altered damage thresholds must be taken into account. In size restricted applications, it is desirable to use a compact beam expander but in most. A beam expander is a set of lenses which reduces the beam size over long distances by expanding the beam at aperture since laser. 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. Cw laser beam expanders galilean design works well for any visible or nearir laser system as a great general purpose beam expander. Optical surfaces laser beam expanders incorporate offaxis mirrors which provide an unobstructed output and highly efficient transmission. A beam expander is a lens assembly capable of changing the diameter and divergence angle of the laser beam. The ila beam expander uses a galilean telescope design. The mvbe has a variable 1x4x expansion range providing precise beam expansion control via rs232 interface. It inherited all the functions and features of ezcad2 and equipped with the most advanced laser functions and software technology. Discover a comprehensive range of laser beam processing elements, the. Laser beam expander with diopter movement 1064nm 10x. While three lenses will provide less beam distortion, every lens causes some loss of light.
Camera with 4x beam expander spz17022 and spz17027 beam splitter model beam expander 4x beam expander with uv converter wavelength 4001800nm 193nm360nm beam size change 4x, 6x, 12x, 22x 4x expansion clear aperture 14 the size of the ccd imager mounting c or cs mount threads 3. Laser beam expander 650nm red laser module longrange dot position indicator40mm extender laser beam expander description. A laser beam from a laser with a divergence angle, for laser processing, only by adjusting the beam expanding mirror of the laser beam is collimated parallel beam, high power density beam focusing mirror can make use of fine. Is there any way to cancel interference rings in a laser beam.
Application of the lasers in optical systems in the various portions of the. The specifications of the laser allow for a range of x,ybeam diameters ellipticity, x,y. The function of a beam expander is to reduce the divergence angle of laser beams and thus make the focused beam diameter smaller. A laser beam from a laser with a divergence angle, for laser. The job of the beam expander is to maintain, independent of the input beam, a constant diffraction limited output beam size as well as a specific waist location. Motorized variable beam expanders collimators can be used to either expand or reduce the laser. The beam expander is mounted directly onto the fp50 ldv probe. To simplify alignment, the input and output ports of each beam expander feature sm05 0. Direct design of laserbeam shapers, zoombeam expanders. The t8x laser beam expander provides a low cost means of focusing and shaping laser beams with a high degree of accuracy. Newport demonstrates how to assemble both a galilean and a keplerian beam expander using standard nbk7 lenses and the alinetm self.
From here you can edit your personal information, manage the products you receive from us, and tell us more about yourself to help us provide you with personalised. In size restricted applications, it is desirable to use a. 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. You will also learn to couple light from free space into an.
File links to several internal databases make the fiberscan c3 program flexible and powerful. Beam expanders consist of two lenses that are built according to. Manual aadapter intrasystem abeamexpander aasphericoll abeambox top. Laser beam expander with kinoform lenses in lesson 11 you saw how a laser beam expander could be designed with ordinary spherical lenses and learned that one would need many lens elements to achieve good performance that way. A motorized beam expander for a wavelength of 532nm and an entrance beam diameter of 8mm is available on request. These databases include a materials application system and a fixture database. Support files datasheets datasheet z series 30 40 watt datasheet infinity series 50120 watt datasheet infinity sb series datasheet 1600 series 200 and 250 watt datasheet beam expander.
Beam expanders are used in applications such as laser scanning. The focal distance of the front lens can be adjusted by distance of the lenses inside the beam expander. This galilean 30x beam expanders incorporate the highly regarded tropel optical designs with improved adjustability and mounting. The beam expander s primary function is to optimize spot size at the focusing lens. The design of an optical element for laser beam line expansion is described. 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. One way to achieve this is through modifying the gaussian beam with lenses in such a way that its waist becomes larger. Bsl beam expanders introduction the bsl17 series are a set of compact and economical beamexpanders for use with small or medium size co2 lasers, such as synrad, and coherent. Mvbe19 motorized variable beam expanders collimators can be used to either expand or reduce the laser beam diameter. The tightly toleranced optical system downstream of the beam expander. Beam expanders have two main purposes in the laser industry. The input of each beam expander has internal sm05 0. 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.
You can change this selection at any time, but products in your cart, saved lists, or quote may be removed if they are unavailable in the new shipping countryregion. Most beam expanders reimage the beam profile at a certain point. 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. Beam expander overview in ldv measurements, the size of the measuring volume depends on the beam distance, the beam diameter and the focal length of the ldv probe. The summary of technical data on the motorized beam expander can. Optical surfaces ltd laser beam expander common focus option. Beam expander some applications require a gaussian beam with smaller divergence angle. The current version is designed for a wavelength of 1064nm and an entrance beam diameter of 8mm. A manual or motorized variable adjustment enables a 1 to 3 times or respectively. They are ideal for applications in which a small spot must be formed at. Usually beam expanders are used to increase the diameter of laser beams. Bsl beam expanders introduction the bsl17 series are a set of compact and economical beamexpanders for use with small or medium size co2 lasers, such as synrad, and coherent diamond lasers.
If and when you need a laser beam expander, youll then need to determine the one that fits your needs best. They are ideal for applications in which a small spot must be formed at some distance from the laser, or where the collimation range must be extended for illumination, or for alignment of distant objects. Beam expander, laser beam expander hyperion optics. Lesson 12 did the same design with only two aspheric elements, with excellent results. The most common type of beam expander is derived from the galilean telescope which usually has one negative input lens and one positive output lens. Due to dispersion, lensbased beam expanders are only capable of compensating for. Ccd laser beam profiler with 4x beam expander attached. Jul 17, 2016 many laser systems have a beam expander to change the diameter of the beam from the source to match the requirements of the optical system. In order to reduce the divergence angle, we need to expand the beams waist. The technique for designing such a lens is given together with examples of lenses having different rates of divergence. Ezcad3 laser software ezcad3 is the most powerful laser and galvo control software for 2d and 3d laser processing like laser marking, engraving, etching, and welding.
Nov 18, 2015 newport demonstrates how to assemble both a galilean and a keplerian beam expander using standard nbk7 lenses and the alinetm selfaligning lens mount system. In a laser beam expander, the placement of the objective and image lenses is reversed. An alternative for the beam expander design is to use two offaxis paraboloids with a common focus. 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. Download free adobe pdf reader and solidworks viewer on the left. The diameter of the output lens should be larger than the desired exit beam diameter. Gaussian beam depend not only on the specifications of the beam expander, but also on the laser beam parameters as well as the positions of the optical lenses.
This galilean 30x beam expanders incorporate the highly regarded tropel. 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. Beam expanders for co2 lasers lens systems laser components. These systems are suited for typical medium power levels of up to. The beam diameter is 1 mm, and the expander will be mounted at the exit of the laser. Beam expanders are optical devices that take a collimated beam of light and expand its size or, used in reverse, reduce its size in laser physics they are used either as intracavity or extracavity elements.
Reducing the laser beam diameter results in a corresponding magnification of the entrance beam divergence. Variable xyuv beam expander for highpower laser beam shaping. A light or laser beam expander is a scientific instrument that allows parallel light or laser rays to have an input beam expanded to become a larger output beam. The design features, high technical specifications and wide choice of options that have made the optical surfaces ltd. The laser beam emitted from the laser has a certain divergence angle. Yag and yb doped fibre lasers operating near the 1. Beam expanders are used in applications such as laser scanning, interferometry, and remote sensing. Mvbe motorized variable beam expanders collimators can be used to either expand or reduce the laser beam diameter.
Pdf paraxial properties of threeelement zoom systems for laser. Good morning, in my laboratory we need a beam expander of 6x. Compact beam expanders that do not sacrifice laser beam. Other beam expanders contain 4 lenses consisting of 3 lens groups, the first being. These galilean beam expanders incorporate the highly regarded tropel optical designs with improved adjustability and mounting. Motorized variable beam expanders can be used to either expand or reduce the laser beam. The beam diameter can be reduced through inverse operation of the beam expander. Effect of beam expander design on near and far laser detection. Beam expansion and beam shaping at the next level asphericon. High cw damage threshold makes this ideal for cw laser processing. The specifications of the lenses used in the beam expanders.
The x3 beam expander is explicitly made for our handheld lasers. 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 laser beam expander is designed to increase the diameter of a collimated input beam to a larger collimated output beam. The element which bears some resemblance to a prism with a small radius at its apex expands the laser beam in one direction only. The element which bears some resemblance to a prism with a small radius at its apex expands the laser beam in one direction. Most beam expanders have two or three lenses to accomplish the task. Im using a 447 nm laser which happen to have a very bad beam shape at its output that looks like a diffraction pattern see attached file. Laser beam expander with kinoform lenses in lesson 11 you saw how a laser beam expander could be designed with ordinary spherical lenses and learned that one would need many lens.
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