Lasers for medicine and life sciences
We develop the diode laser technology for medical and life science applications. This enables us to adapt our light sources precisely to the respective requirements, from imaging and diagnostics to therapeutic procedures.
Our compact, frequency-stabilized diode lasers ideally meet the requirements for such applications. They could therefore replace bulky lasers. FBH's miniaturized laser sources also score with regard to efficiency, precisely adjustable wavelengths, tunability, high coherence, and many other advantages. Thanks to their small dimensions, the corresponding laser systems become significantly smaller, more flexible, and can also be used in mobile applications..
Micromodule with master oscillator power amplifier setup including optical isolator, non-linear crystal for frequency doubling, and fiber coupling
MiFeM-color module with six DBR-tapered diode lasers combined by means of wavelength multiplexing
Amplifier and frequency converter module, which has a optical fiber input and output
Laser micromodule for use in a sensor head of a high-resolution quantum OCT-spectrometer
Medical treatment
High-power laser sources with output powers ranging from a few watts to over 30 W have been developed for therapeutic applications in the projects YELLOW and MiFeM. For medical treatments, such as photothermolysis of dermal vascular lesions and photocoagulation in ophthalmology, the yellow spectral range with wavelengths around 577 nm is ideal, as there is a clear absorption peak of oxyhaemoglobin. This enables to treat darker skin types and also reduces melanin absorption and scattering in the epidermis compared to shorter wavelengths. Treatment is therefore less painful for patients.
Imaging and diagnostics
Exotic wavelengths enable high-resolution imaging and precise diagnostics. In the projects YELLOW and µ-MLE, laser sources in the green-yellow spectral range with wavelengths around 561 nm were realized. They are used to excite fluorescent dyes and enable high-resolution microscopy. The diode-based laser systems can fully exploit their strengths with the modulability of the output emission from the CW range (confocal microscopy) to picosecond pulses (STED). The development of entirely new light sources combined with the use of quantum effects enables the realization of advanced detection methods in the mid-infrared range. In this way, environmentally harmful substances such as microplastics can be detected (project SimQPla) and cancer diagnostics (projectQEED) can be significantly improved.