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EKSMA Optics
Optical Systems | EKSMA Optics

Optical Systems | EKSMA Optics

Product catalog summary

Optical Systems Overview
This document from EKSMA OPTICS provides a comprehensive guide to various optical systems, including F-Theta lenses, beam expanders, and beam shaping lenses. It includes specifications, applications, and pricing for each product.

F-Theta Lenses
Designed for scanning and engraving with high-power lasers, these lenses provide a flat field on the image plane. Key specifications include screw size M85×1, wavelengths of 1064 nm, 532 nm, and 355 nm, lens diameter of 90 mm, and focus lengths ranging from 100 mm to 420 mm. Prices range from 420 EUR to 930 EUR.

Compact Beam Expanders
These devices increase the diameter of a collimated input beam and are available for wavelengths of 1064 nm, 532 nm, and 355 nm with expansion ratios from 2X to 10X. Specifications include AR coated Fused Silica lens material, screw size M22×0.75, and transmission greater than 96%. Prices range from 235 EUR to 250 EUR.

Zoom Beam Expanders
These expanders offer adjustable expansion ratios and divergence for Nd:YAG lasers, available for wavelengths of 1064 nm, 532 nm, and 355 nm. Adjustable expansion ratios range from 2x-8x, 1x-8x, and 1x-3x, with prices from 500 EUR to 1100 EUR.

Simple Telescope Kit
This kit compensates for optical aberrations using a combination of simple lenses, including 8 lenses, an Aluminium Optical Rail, and various mounts, with a net weight of 1.4 kg.

Gauss-to-Top Hat Beam Shaping Lens
This lens transforms a Gaussian beam into a Top Hat profile. Specifications include LF5 Schott glass material, clear aperture of Ø11.0 mm, and a damage threshold greater than 3 J/cm² at 532 nm. Prices range from 771 EUR to 1685 EUR depending on coating.

Operation Instructions
Detailed instructions are provided for adjusting the working distance and size of the Top Hat profile using additional lenses. It also covers the generation of homogeneous lines with the Top Hat beam shaper lens and additional cylindrical lenses.

Specifications:
The document outlines specifications for two types of Top-Hat beam shapers: GTH-4-2.2FA and GTH-3.6-1.75FA, designed to transform a Gaussian TEM00 input beam into a square homogeneous Top-Hat profile.

Procedures:
For optimal performance, beam shapers should be used with a Gaussian input beam and positioned in front of a focusing optic or within a beam expander. The necessary free aperture along the beam path should be at least 2.2 times the beam diameter.

Norms and Recommendations:
The document recommends using a cylindrical lens to generate homogeneous line profiles and emphasizes maintaining the correct beam diameter at the position of the beam shaper for effective transformation.

Additional Information:
Pricing for different lens coatings is included, with specific laser wavelengths available upon request. Examples of achievable Top Hat sizes at various distances and focal lengths are provided.

Introduction to Beam Shaping:
The document discusses transforming a Gaussian beam profile into a Top-Hat profile using an FBS beam shaper, resulting in a homogeneous Top-Hat profile from an initial diffraction-limited Gaussian spot.

Specifications and Procedures:
Input beam diameter variation is ±5-10%. Without the FBS shaper, the beam maintains a diffraction-limited Gaussian profile; with the FBS shaper, it achieves a near diffraction-limited Top-Hat profile.

Beam Expansion and Focusing:
Introducing the FBS beam shaper before a beam expander increases the numerical aperture and results in a smaller Top-Hat profile.

Optical Systems and Accessories:
Recommended accessories include zoom beam expanders and polarizer holders. Specifications for various optical components, including damage thresholds and antireflection coatings, are provided.

Product Listings and Pricing:
Product listings include catalogue numbers, central wavelengths, clear apertures, and prices in EUR for various optical components.

Polarizers and Waveplates:
Thin Film Brewster type polarizers reflect s-polarized light and transmit p-polarized light at a 56° angle. Quartz Half Waveplates are used in motorized rotation stages to vary the intensity ratio of beams.

Spatial Filters:
The precision spatial filter 990-1000 is designed to filter beams from low power, visible to near-infrared lasers, delivering a smooth intensity profile.

Iris Diaphragms:
Details different series of iris diaphragms, including zero aperture, standard with retainer, and screwed types, used to control light intensity and beam diameter in optical systems.

Ordering Information:
Ordering codes and prices for various components are provided, with options to include controllers and power supplies for motorized attenuators.

Mounted Iris Diaphragms:
Features zero aperture iris diaphragms with specifications such as outer diameter, maximum and minimum aperture, thickness, and material type.

Motorized Iris Diaphragms:
Motorized diaphragms with aperture ranges from 5 mm to 98 mm, featuring fast closing speeds and high resolution.

Variable Wheel Attenuators:
Basic model with 4 filter-set wheels, each containing 4 filter slots, designed for use with CCD cameras and other sensitive photodetectors.

Filter Holders:
Allows fixation of up to 3 filters in 2-inch optics ring holders, suitable for optical elements with thickness from 0.5 mm to 14.0 mm.

Motorized Attenuators:
Consists of two filter wheels, each with eight mounts inclined by 4° to prevent reflections, operated via a step motor and controlled by a computer.

Beam Dumps:
Air-cooled beam dump for CW or pulsed laser beams up to 50 W, with a wavelength range of 0.1 to 30 µm.

Additional Information:
Details on related products such as Neutral Density Filters, Colour Glass Filters, and motor controllers are included.

Catalog excerpts

OPTICAL SYSTEMS Optical Systems Selection Guide Compact Beam Zoom Beam Telescope Kit Beam Shaping Lens page 7.12 page 7.14 page 7.15 page 7.16 page 7.18 page 7.18 page 7.19 Unmounted Iris Mounted Iris Mounts for Iris Motorized Iris Motorized Iris Motorized Iris 990-0604 Diaphragms Diaphragms Diaphragms Diaphragms Diaphragms page 7.27 page 7.22 page 7.23 995 Series 996 Series 997 Series page 7.24 page 7.25 page 7.26 page 7.31 page 7.32 page 7.34

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OPTICAL SYSTEMS F-THETA LENS Wavelength - 1064 nm, Lens Diameter - 90 mm Catalogue Focus Working Max. scan Max. scan Input beam Spot _ Price, number length, mm distance S, mm area, mm2 angle, 8 max diameter, mm size, pm EUR Wavelength - 532 nm, Lens Diameter - 90 mm Catalogue Focus Working Max. scan Max. scan Input beam Spot _ Price, number length, mm distance S, mm area, mm2 angle, 0 max diameter, mm size, pm EUR Catalogue Focus Working Max. scan Max. scan Input beam Spot _ Price, number length, mm distance S, mm area, mm2 angle, 0 max diameter, mm size, pm EUR Visit www.eksmaoptics.com for...

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Specifications Screw Size Best mirror places m1/m2 Wavelength – 1064 nm, Lens Diameter – 104 mm Catalogue number Input beam diameter, mm Compact Beam Expander Optical Systems A laser beam expander is designed to increase the diameter of a collimated input beam to a larger collimated output beam. EKSMA OPTICS offers compact Galilean type beam expanders for 1064 nm, 532 nm and 355 nm wavelengths. Compact beam expander has the possibility to be adjusted for the input beam divergence angle to obtain collimated, divergent or focused beam at the output. Catalogue number Expansion ratio Beam expander...

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Optical Systems Zoom Beam Expander EKSMA OPTICS offers compact Galilean type zoom beam expanders for Nd:YAG lasers fundamental and harmonics wavelength: 1064 nm, 532 nm and 355 nm. Zoom beam expander provides variable expansion ratio of 2x-8x, 1x-8x, 1x-3x with adjustable focus to correct for laser beam divergence. Catalogue number Expantion ratio Input Clear Aperture, mm Output Clear Aperture, mm ● Adjustable expansion ratio ● Adjustable divergence ● Galilean design * made of quartz; other zoom beam expanders are made of BK7 Drawings are available upon request. Related Product Universal Adjustable...

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Optical Systems Lens material: BK7 Lens 1 BK7 bi/cv Ø12.7 mm 114-0104 Lens material: UVFS Lens 2 Distance between lenses d=f1+f2, mm Lens 1 UVFS bi/cv Ø12.7 mm 114-1104 Distance between lenses d=f1+f2, mm Note that distance between lenses d is the distance between focal planes of the lenses and is given theoretically (the thickness of lenses is not included into calculation). It, also, depends on wavelength. The distance should be adjusted ±10 mm in each particular case. Optical Systems Each kit includes 8 lenses, Aluminium Optical Rail 810-0005-02, two Aluminium Rail Carriers 810-0007-06, Self...

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Optical Systems Gauss-to-Top-Hat Beam Shaping Lens Square top hat size and correspondingly working distance can be changed by placing extra lens or objective behind beam shaping lens GTH-5-250-4. Dependence of square size and working distance vs focal length of additional lens or objective: Focal length, mm +50 +100 +200 +300 -1000 -500 GTH-5-250-4 Operation Specifications Recommended operation wavelength range Input beam Output beam Top hat size at 250 mm working distance: 4 × 4 mm² (adjustable with additional lens) Working distance 250 mm (adjustable with additional lens) Beam energy distribution...

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Optical Systems Homogeneous Line Generation with Top Hat Beam Shapper Lens and Additional Cylindrical Lens By introducing an additional cylindrical lens behind the Top Hat distance l > focal length input beam beam shaper lens of cylindrical lens (thereby one has to consider that working distance d = 250 mm, nessesary diameter of Gaussian input the distance l bewith collimated input beam beam @1/e : 5 mm tween cylindrical lens and working plane must be bigger or same as focal length of cylindrical lens) it‘s possible to generate a line profile at working plane. Along the long axis the intensity...

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Optical Systems GTH-4-2.2FA Operation Instructions General function of Top-Hat beam shaper GTH-4-2.2FA Top-Hat beam shaper lens collimated input beam full fan angle 2.2 mrad 1. Beam shaper directly in front of focusing optic/objective (Top Hat size >100 μm). Top Hat size is determined by focal length (f) of focusing optic/ 2.2 objective and can be calculated as follows: ·f 1000 free aperture 2.2x beam diameter @1/e² additional focusing lens/objective collimated input beam Top-Hat size 1.65 × 1.65 mm² full fan angle 2.2 mrad distance = f1 = 50 mm distance = f2= 750 mm distance => infinity Top-Hat...

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Optical Systems Gauss-to-Top-Hat Beam Shaping Lens Working distance is given by focal length of additional lens which is always needed. Top Hat appears always at focal plane of additional lens. For instance if an additional lens f = 100 is used, Top Hat appears at 100 mm behind additional lens. So GTH-3.6-1.75FA could be easily put in front of objectives for example. The distance between GTH-3.6-1.75FA and additional lens is not critical (up to several tens of centimeters). The full fan angle of Top-Hat generation for GTH-3.6-1.75FA is 1.75 mrad. This leads to Top-Hat sizes: – 88×88 µm for lens...

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Optical Systems 3. Beam shaper within beam expander (Top Hat size @ 1/e² < 90 μm). Top Hat size is determined by numerical aperture (NA) of focused beam and is given by: 3.2 µm Þ≈ 5x diffraction limited @ 1064 nm (10x @ 532 nm) NA focusing lens/objective nessesary diameter of Gaussian input beam @1/e2: 3.6 mm diameter of Gaussian input beam @1/e2: <3.6 mm additional spherical lens/objective cylindrical lens radius of beam @ focusing optic homogeneous line profile nessesary diameter of Gaussian input beam @1/e2: 3.6 mm z – position of beam shaper beam expander working distance d = ffocusing lens...

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Optical Systems | EKSMA Optics

Optical Systems | EKSMA Optics

Catalog excerpts

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