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Examples of Investigation and
Measurement
Wavelength of a laser
By using a grating with known grating constant the wavelength of a laser
is determined. Through this result gratings with unknown parameters are
investigated.
Spectrum of a light source
The diffraction of a line spectrum by a grating is performed. For higher
diffraction orders the advantage of a larger spread of the spectrum and
therefore a higher resolution is demonstrated. On the other hand the
drawback of overlapping spectra in higher orders can be shown in this
experiment.
Spectral resolution
In combination with a magnifying lens the lines of a spectral lamp are
magnified. By varying para meters like grating constants or
magnification their influence on the resolution of the apparatus can be
determined and discussed.
Two-dimensional grating
The effect of a two-dimensional grating is shown on two crossed line
gratings. The relations of the grating to the diffracted light pattern
are demonstrated by twisting the two gratings or by using gratings with
different grating constant.
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OXP-08 Required Equipment |
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1 |
02.1022 |
Carrier OCM 650, 20 mm with screen holder |
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02.1602
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Screen with scale |
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2 |
02.2126 02.2150 |
Mounting plate OCM 650 for click 25, including carrier
20 mm |
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1 |
02.6106 |
4 axis adjustment holder KH650, theta, phi, X and Y,
including carrier 20 mm |
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04.0054 04.0061 |
Biconvex lens f=150
mm, mounted in click 50 mount |
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| 05.0106 |
Spectral lamp with
slit and power supply |
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1 |
05.0226 |
DIMO diode laser module, 532 nm (green) |
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| 1 | 07.0010 |
BNC – Banana adapter
connection leads 2x4 mm plugs |
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| 1 | 07.0102 |
PIN Si Photodetector
BPX 61 complete with housing |
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| 1 | 07.0206 |
LDD-05 active power supply |
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| 1 | 09.1746 |
Beam expander
magnification 6x |
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| 1 | 09.1810 |
Optical grating assembly A hinged joint angle
connector holds various optical gratings of 50 mm x 50
mm x 2,5 mm provided in this assembly to study the
diffraction of gratings. The unit can be mounted onto
two optical rails which can be set in a defined angle to
each other. By adjusting the hinge angle, the beam
deviation angle can be measured on a scale from -90 -
+90° at intervals of 2°. |
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| 1 | 09.1848 |
Beam expander magnification 2.7x The beam expander,
consisting of two lenses mounted onto a click 25 optical
mount and a 40 mm x 25 mm diameter sleeve, can be fixed
onto the mounting plate (02.2126) which is attached to
the optical rail using a carrier. The divergence of the
magnified beam is adjusted by varying the telescope
length. |
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| 1 | 19.0400 |
Digital multimeter 3 ˝ digits
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