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Optomechanics

Tools of the trade - Vol 18 - 36188 Fixed Vertical Slits

Mounting Basics

Specifications

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Finish: oxide, dull black both sides

Optical Rails

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Material: 302 Stainless Steel, Non-magnetic

Mirror Mounts

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Diameter: 3/8" (9.5mm)

Lens Mounts

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Thickness: 0.0005" (12.8µm)

â–  S50R

Position Tolerance: Ø0.006" (0.15mm)

Filter MountsRotation Post Mounted

These precision rectangular slits areideal for providing a defined inputaperture for an optical system. Thedimensional tolerance on the actual slit width is ±1µm for the 5µm to 15µm slits, ±2µm for the 20 to 40µm slits ±3µm for the 50µm to 75µm, and±4µm for the 100µm to 200µm slits.

Adapters

Damage Threshold All slits measure 3mm in height.

4 2

V-Mounts

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5 x 10 W/mm , 75ns Pulse@700nm

Apertures& Iris Diaphragms

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1 x 10

5

W/mm

2

, 10ns Pulse @700nm

Lens Tubes

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1 x 10

3

W/mm

2

, CW @ 10.6µm

See Page 186 for convenient mounting cell.

Cage Systems

ITEM#$£ ¥DESCRIPTION S5R$90.00£67.50 94,50¥15,3005µm Vertical Slit S10R$90.00£67.50 94,50¥15,30010µm Vertical Slit S15R$90.00£67.50 94,50¥15,30015µm Vertical Slit S20R$90.00£67.50 94,50¥15,30020µm Vertical Slit S30R$90.00£67.50 94,50¥15,30030µm Vertical Slit S40R$80.00£60.00 84,00¥13,60040µm Vertical Slit S50R$80.00£60.00 84,00¥13,60050µm Vertical Slit S75R$80.00£60.00 84,00¥13,60075µm Vertical Slit S100R$80.00£60.00 84,00¥13,600100µm Vertical Slit S125R$80.00£60.00 84,00¥13,600125µm Vertical Slit S150R$80.00£60.00 84,00¥13,600150µm Vertical SlitS200R$80.00£60.00 84,00¥13,600200µm Vertical Slit

Spatial Filter System

For many applications, such as holography, spatial intensity variations in the laser beam are unacceptable. Our KT310 spatial filter is ideal forproducing a “clean” Gaussian beam. Referring to the photograph on theleft, the input side consists of a Z translator that will hold a diffraction limited aspheric lens to focus your laser through a pinhole. The pin hole should be mounted in the provided XY translator to allow easy adjustment. See spatial filters above and on the previous page.On the output side, provisions have been made for the mounting andcentration of a Ø1" collimating optic. Choose from our selection of plano-convex Ø1" lenses featured on pages 564.

KT310 INPUT SIDEXYTRANSLATORHOUSES PINHOLEZTRANSLATOROUTPUT SIDE 4.21" (107mm)BEAM HEIGHTP-SERIES POSTSEE PAGE 90

Principles of Spatial Filters Mechanics onlyOptics &Pinholes Sold Separately The input Gaussian beam has added to it spatially varying intensity “noise.” When a beam isfocused by an aspheric lens, the input beam is transformed into a central Gaussian spot (on the optical axis) and side fringes which represent the unwanted “noise.” The radial position of the side fringes is proportional to the spatial frequency of the “noise”. By centering a pin hole on the central Gaussian spot, the “clean” portion of the beam can pass while the “noise” fringesare blocked.The diffraction limited spot size at the 99% contour is given by: D = λ ƒ/r where λ =wavelength, ƒ=focal length and r=input beam 1/e

2

radius. A pin hole that is approximately 30%larger is chosen to allow the focused Gaussian spot to pass while blocking the “noise” fringes that are shifted off axis.

ITEM#METRIC ITEM$£ ¥DESCRIPTION KT310KT310/M$625.00£468.75 656,25¥106,250Spatial Filter Mechanical Assembly

Sales: 973-579-7227

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