Pockels effect: transmitting information using modulated light

VP5.4.5.2
Pockels effect: transmitting information using modulated light
Pockels effect: transmitting information using modulated light

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Description

The experiment P5.4.5.2 shows how the Pockels cell can be used to transmit audio-frequency signals. The output signal of a function generator with an amplitude of several volts is superposed on a DC voltage which is applied to the crystal of the Pockels cell. The intensity of the light transmitted by the Pockels cell is modulated by the superposed frequency. The received signal is output to a speaker via an amplifier and thus made audible.

Components of equipment sets

1 47290 Pockels cell LD
1 52170  8  High-voltage power supply, 10 kV LD
1 471830  8  He-Ne Laser, linearly polarised LD
1 522621  4  Function generator S 12 LD
1 57862  4  Solar cell, STE 2/19 LD
1 46021  4  Holder for plug-in elements LD
1 53220  8  AC/DC amplifier 30 W LD
1 58708  8  Broad-band speaker LD
1 472401  4  Polarisation filter LD
1 46032  8  Optical bench with standardised profile, 1 m LD
4 460370  8  Optics rider, 60/34 LD
1 30011  4  Saddle base LD
1 50098  8  Safety adapter sockets, black, set of 6 LD
2 500622  4  Safety connecting lead 50 cm, blue LD
3 500641  8  Safety connecting lead, 100 cm, red LD
3 500642  4  Safety connecting lead, 100 cm, blue LD

Experiment Instructions

PDF (Experiment description) PDF (Experiment description) P5.4.5.2 Pockels effect: transmitting information using modulated light
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