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Beam expanders, F-Theta lenses, Objectives

Beam expanders, F-Theta lenses, Objectives
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Beam expanders, F-Theta lenses, Objectives - 1

SPHERICAL AND ASPHERICAL LENSES OPTICAL MIRRORS Beam Expanders • 3X, 5X and 10X fixed expansion factor • Galilean optical design • Adjustable divergence on all models OPTICAL WINDOWS & CYLINDRICAL & DIFFRACTION GRATINGS ACHROMATIC LENSES • Transmission greater than 98% • AR coated for 1064 nm, 532 nm, and 355 nm The function of a beam expander is to increase the size of the laser beam, reduce the divergence angle of the input laser with the goal of making the focused beam smaller. Our laser beam expanders provide a fixed expansion factor. We use either an air spaced two lens system or an achromat in order to minimize chromatic and spherical aberrations and reach diffraction limited performance. All our beam expanders have adjustable divergence. The design is Galilean, which means there is no internal focus and the system length is short compared to a Keplerian design. The lens and the mechanical parts are precisely designed to maximum pointing stability due to any rotational shifts which may occur from setup changes. All of the 355 nm beam expanders use fused silica to make them suitable for high power laser applications. All lenses are antireflection coated for their specific wavelengths yielding transmissions over 98%. For 1064 nm the damage threshold is 5.0 J/cm2 (1ns pulse at 50Hz). For 532 nm the damage threshold for expanders with fused silica on the input and optical glass on the output is 2.5 J/cm2 (1ns pulse at 50Hz). For 355nm the damage threshold is 1.0 J/cm2 (1ns pulse at 50Hz). Beam Pointing Stability (mrad) BEAM EXPANDERS Max. input beam Max. exit beam diameter diameter CLEANING & OTHER LAB ESSENTIALS OPTICAL MODULATORS MULTI-ELEMENT OPTICAL ASSEMBLY

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Beam expanders, F-Theta lenses, Objectives - 2

Damage Threshold fused silica/glass fused silica/glass fused silica/glass fused silica/glass fused silica/glass fused silica fused silica fused silica fused silica fused silica fused silica fused silica fused silica fused silica Beam expander wavefront error peak to valley, measured on design axis. Full beam size = 2x1/e2 diameter. Galilean Optical Design. Max lengthening of 3 mm possible. Divergence of output beam is adjustable. Beam expander, 1.5x mag, fiber laser Beam expander, 10x mag,1064nm, fused silica Beam expander, 10x mag, 355nm, fused silica Beam expander, 10x mag, 532nm, fused...

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Beam expanders, F-Theta lenses, Objectives - 3

• 3x to 30x • Galilean optical design • Ideal for use with HeNe lasers WAVEPLATES AND POLARIZERS PRISMS AND RETRO-REFLECTORS OPTICAL WINDOWS & CYLINDRICAL & DIFFRACTION GRATINGS ACHROMATIC LENSES BEAM EXPANDERS MULTI-ELEMENT OPTICAL ASSEMBLY OPTICAL MODULATORS CLEANING & OTHER LAB ESSENTIALS • Wavefront distortion less than l/4 SPHERICAL AND ASPHERICAL LENSES OPTICAL MIRRORS Laser Beam Expanders • Transmission greater than 95% Our Laser Beam Expanders provide a low cost means of focusing and shaping laser beams with a high degree of accuracy. These Galilean beam expanders incorporate the...

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Beam expanders, F-Theta lenses, Objectives - 4

Beam Specifications Ordering Information Model Expansion Ratio Entrance Aperture (mm) Exit Aperture (mm) Focus Range (m) High-Energy Laser Beam Expanders • Galilean design eliminates focused retroreflections •Air-spaced optical design with large entrance aperture •Adjustable focus for collimation at various wavelengths These High-Energy Laser Beam Expanders have a Galilean optical design to eliminate the possibility of focused retroreflections. Air-spaced optics with a choice of antireflection coatings withstand beam fluencies up to 8 J/cm2 at 1064 nm. Adjustable focus allows for...

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Beam expanders, F-Theta lenses, Objectives - 5

OPTICAL MIRRORS Design Wavelengths Wavefront Distortion Damage Threshold 8 J/cm2 with 10 nsec pulses at 1064 nm, typical Ordering Information To order, append the coating code AR.14, AR.16, AR.18, or AR.33 to the beam expander product number. For example, HB-4X+AR.14 = HB-4XAR.14 Coatings Wavelength Range (nm) SPHERICAL AND ASPHERICAL LENSES Coating Code Expansion Ratio Input Beam Diameter (mm) Note: A mounting ring is supplied for our LP-2 Mount (HB-4X) or 605-4 Mount (HB-10X/20X). F-Theta Lenses • Optimized and coated for 1064 nm, 532 nm, and 355 nm • Average transmission efficiency...

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Beam expanders, F-Theta lenses, Objectives - 6

Lens Specifications Working Maximum Diameter Focal Length Wavelength Aperture Stop Distance Length Angle of Weight Model (mm) (mm) (nm) (mm) (mm) (mm) Incidence Transmission Material (kg) Scan Specifications Wavelength Scan Scan Length Scan Max. input Damage Model (nm) Angle (mm) Area beam diameter Threshold Mounting All scan lenses have M85xl mounting thread and comes with a protective window Ordering Information Model Description FSTL-355 F-Theta Lens, 355 nm, 250 mm EFL, fused silica FTL-355 F-Theta Lens, 355 nm, 174 mm EFL, fused silica SPFTL-1064 Short Pulse F-Theta Lens, 1064 nm, 163...

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Beam expanders, F-Theta lenses, Objectives - 7

OPTICAL MIRRORS Telecentric F-Theta Lenses SPHERICAL AND ASPHERICAL LENSES • Telecentric design for normal incident beam across the scan field • Optimized and coated for 1064 nm, and 532 nm • Transmission efficiency greater than 96% BEAM EXPANDERS OPTICAL WINDOWS & CYLINDRICAL & DIFFRACTION GRATINGS ACHROMATIC LENSES • ±1.5% EFL and working distance tolerance • Replaceable protective window included for all models In a standard F-Theta lens, the incident beam will be normal to the surface only along the axis of the lens. When the laser beam is off axis, the beam strikes the surface at an...

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Beam expanders, F-Theta lenses, Objectives - 8

SPHERICAL AND ASPHERICAL LENSES OPTICAL MIRRORS Objective Lenses Our infinity corrected objectives are designed with the rear conjugate at infinity and are ideal for use as input lenses in collimating applications when optimum wavefront quality is required. They are available in a range of powers from 4x to 40x. Ordering Information VALUMAX® Objectives Magnification MV- series microscope objective power is based on a 187 mm tube length. MP = 187 mm/f Infinity Corrected Objectives CYLINDRICAL & OPTICAL WINDOWS & ACHROMATIC LENSES DIFFRACTION GRATINGS Our MV- and M- microscope objectives are...

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