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Vernier Diffraction Apparatus

Order code: DAK
Purchase QTY: (Each)1+    
Scientrific's price  $1,517.00    
Note: Prices do NOT include GST or freight








The Vernier Diffraction Apparatus lets students create, view and measure diffraction and interference patterns. The included Red Diffraction Laser provides a clean monochromatic light source. Slits are made by depositing metal film on glass, creating extraordinarily clean slits with fully opaque blocking areas. These high-precision slits cast clean diffraction and interference patterns, ideal for quantitative matching of intensity vs. position predictions.

The Linear Position Sensor and High Sensitivity Light Sensor completes the Diffraction Apparatus. In order to provide excellent spatial resolution, a selectable entrance aperture restricts the width of the pattern viewed by the High Sensitivity Light Sensor. The light sensor has three ranges, allowing the study of fine details or gross features of patterns. To measure position, the light sensor is mounted on a novel Linear Position Sensor.

This position sensor uses a precision optical encoder to measure translation with better than 50 micron resolution. Since it is optically based, without gears or racks, it has zero backlash.

Data collection is performed by choosing a slit, directing the laser through the slit and choosing an entrance aperture for the light sensor. Both the light sensor and position sensor connect to your interface. The light sensor is moved by hand over a 150mm distance, tracing out the diffraction pattern.

The effect of wavelength on the pattern can be measured using the optional Green Diffraction Laser

Additional Hardware Required:

The Vernier Diffraction Apparatus requires one Combination 1.2m Track/Optics Bench to serve as an optics bench. The Combination 1.2 m Track/Optics Bench is included with Vernier Dynamics Carts and Track Systems, sold separately.


• Red Laser Wavelength: 636nm

• Light Sensor Full Scale Ranges: 1, 10 and 100µW

• Linear Position Sensor range: 150mm

• Linear Position Sensor resolution: 40µm

Available slits:

• Single Slits (4)





• Variable Slits (2)

     Wedge: 0.02 – 0.2mm wide

     Double Slit: 0.04mm wide, spacing 0.125 – 0.75mm

• Double Slits (4 pairs)

     0.04mm wide at 0.25mm apart

     0.04mm wide at 0.5mm apart

     0.08mm wide at 0.25mm apart

     0.08mm wide at 0.5mm apart

• Variable Double Slit

     Same as variable slits group above

• Multiple Slits

     0.04mm wide at 0.25mm apart

     4 sets, 2, 3, 4, 5 slits

• Comparisons: 4 pairs of single/double slits: 0.04mm single + 0.04/0.25mm double, doubles 0.04/0.25 +0.04/0.50, doubles 0.04/0.25+0.08/0.25, double 0.04/0.25 + triple, 0.04/0.25


• Diffraction Slit System

• Red Diffraction Laser

• Combination Linear Position and High Sensitivity Light Sensor

• Power Supply

Download the current Vernier K-12 Catalogue

Download the current Vernier University Catalogue

Educational use only:
Vernier and Kidwind products are designed for educational use. They are not appropriate for industrial, medical or commercial applications. Details

  • Warranty: 5 years
    This product is used in teaching these Australian Curriculum codes:
    ACSPH076 - Linear Motion and Waves - Waves - A wave model explains a wide range of light­related phenomena including reflection, refraction, total internal reflection, dispersion, diffraction and interference; a transverse wave model is required to explain polarisation
    Click a curriculum code to see other products that relate.

    Essential items - The following items are required:
    TRACKVernier Combination 1.2m Track/Optics Benchfrom $328.00 plus GST
    TRACK-LONGVernier Combination 2.2m Track/Optics Benchfrom $580.00 plus GST

    Accessories / Spare Parts:
    LQ-PS-INTLVernier LabQuest International Power Supplyfrom $39.00 plus GST
    GDL-DAKVernier Green Diffraction Laserfrom $607.00 plus GST
    DSS-DAKVernier Diffraction Slit System Replacementfrom $364.00 plus GST
    LPL-DAKVernier Combo Pos Light Sensor Replacementfrom $971.00 plus GST
    RDL-DAKVernier Red Diffraction Laserfrom $291.00 plus GST

    Works with:
    OEKVernier Optics Expansion Kitfrom $447.00 plus GST
    CM-OEKVernier Colour Mixer Kitfrom $437.00 plus GST
    DTSVernier Dynamics Cart and Track Systemfrom $716.00 plus GST
    CART-FVernier Fan Cartfrom $265.00 plus GST
    BLKVernier Bumper and Launcher Kitfrom $216.00 plus GST
    PAD-VDSVernier Friction Accessoryfrom $64.00 plus GST
    PF-CARTVernier Cart Picket Fencefrom $15.00 plus GST
    DTS-ECVernier Dynamics Cart and Track System with Motion Encoderfrom $1,080.00 plus GST
    DTS-LONGVernier Dynamics Track System Longfrom $969.00 plus GST
    DTS-EC-LONGVernier Dynamics Track System Encoder Longfrom $1,333.00 plus GST
    VDSVernier Dynamics Systemfrom $597.00 plus GST
    PAK-OEKVernier Polariser Analyser Kitfrom $206.00 plus GST
    M-OEKVernier Mirror Set for Optics Expansion Kitfrom $143.00 plus GST

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    User ManualGetting Started - Connecting your sensor
    User ManualVernier Diffraction Apparatus