Examples of Investigation and Measurement

Current dependency of LEDs and Laser Diodes
The dependency of the emitted light intensity on the electrical current is investigated. Therefore several LEDs and a laser diode are provided.

Beam properties and polarization of LEDs and Laser Diodes
The strongly divergent beams of LEDs and laser diodes are investigated concerning opening angle and ellipticity. With special lenses beam shaping is performed to achieve special beam profiles like for example laser lines.

Spectral properties of LEDs and Laser Diodes
Although based on the same principle of light generation the spectral characteristics of LEDs and laser diodes are very different. By means of an optical grating it shows that the spectral range of LEDs exceed the range of laser diodes by far. Especially the spectrum of white light LEDs is expanded over the whole visible range contrasting the almost monochromatic laser light.