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Applications
in the mid-infrared
In the fields of direct materials processing as well as laser surgery and therapy,
there is an increasing interest in laser systems emitting at wavelengths in the
mid-infrared. This is based on their special absorption characteristics.
In contrast to GaAs-based diode lasers or Nd:YAG lasers in the wavelength regime
of around 1µm, the energy of the laser beam at 2µm is absorbed by the chemical
bondings of the thermoplastic material itself.
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The absorption of laser radiation
at this wavelength in the volume of the material results in a direct and immediate
heating and melting of components. This means that no color pigments or other
additives are necessary.
There is a high application potential for these lasers in laser surgery and therapy
due to the absorption characteristics of water and biological tissues containing
water around wavelengths of 2µm.
In addition, optical pump sources for laser systems emitting in the 2-4µm
wavelength range (e.g. Ho:YAG) and military applications, such as infrared countermeasures,
are addressed.
For special applications such as trace gas spectroscopy or spectroscopy in liquids
or for medical diagnostics we offer tunable diode lasers between 2000 nm and 2300 nm
MIR high power diode lasers based on GaSb
The (AlGaIn)(AsSb) material system epitaxially grown on GaSb substrates has been
established as an ideal basis for the realization of type-I diode lasers in the
1850-2500nm wavelength regime. Different variants such as single emitters or
laser bars are available. In cooperation with our partner companies, we offer
our customers also fiber-coupled modules based on our lasers. Also customized
laser systems like laser stacks for pumping applications have been realized already.
In contrast to well established solid-state lasers used so far, diode laser
technology offers great benefits for the above mentioned applications:
compact and efficient light sources
wavelengths tunable by current and temperature
power scalability by bar and stack technology
long lifetimes
maintenance-free
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Data Sheets Emitters and Bars