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High brightness spectrally filtered (HBSF) SLD‐based light sources

Light sources for interferometric applications

Description

The HBSF series of light sources has been specifically designed for interferometric applications where the spectral width of conventional superluminescent diodes is too wide, but the linewidth of lasers is too narrow. Instead, a spectral width in the range of one or a few nanometers would be ideal for these applications.

The HSBF series are high-brightness SLD-based light sources with a bell-shaped spectrum and a spectral width tailored to meet specific customer requirements. These sources are offered in a compact, computer-controlled, ready-to-use design that provides precise current and temperature control of the built-in emitter. The optical output is protected from optical feedback by an optical isolator. The parameters such as emission wavelength, spectral width and output optical power are specified at the time of pre-order. The light sources are then assembled according to the customer specifications.

The graphs below show an example of an HBSF light source at 675 nm, with 1-nm spectral width (FWHM), 310-µm coherence length in air, and 2.5-mW output optical power. Sources at other wavelengths, with other spectral widths and optical power levels can be built on request. More details and information can be obtained by contacting enquiries@sldsources.com.

Typical performance examples

Below are the performance examples for an HBSF light source at 675 nm, with 1-nm spectral width (FWHM), 310-µm coherence length in air, and 2.5-mW output optical power.

Emission spectrum


Emission spectrum

Coherence function


Coherence function

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