Research Interests

Lasertechnology

Polymer lasers

Nonlinear Optics

	Saturable Absorption
	Excited-State Absorption
	Two Photon Absorption
	Frequency Mixing

Linear Optics

Optical Constants of Thin Films (Refractive Index and Absorption Coefficient)

Linear Spectroscopy

	Absorption Spectroscopy
	Fluorescence Spectroscopy

		Photodegradation
		Characterization of Biological Photo Sensors
		Characterization of Luminescent Polymers

Fluorescence Excitation Spectroscopy

Ultrafast Spectroscopy

	Picosecond Laser Spectroscopy
	Femtosecond Laser Spectroscopy
	Flourescence-up-Conversion
	Pump-Probe-Spectroscopy

Materials Research

	Organic Dyes
	Colour Centres in Crystals
	Laser Dyes in Polymers
	Luminescent Polymers

		Laser Active Luminescent Polymers
		Non-Laser-Active Luminescent Polymers

	Organic LED Materials
	Natural and Artificial Photo-Receptors

		Blue Light Photoreceptors (LOV-Domains, Cryptochromes, BLUF Domains)
		Flavins (FMN, FAD, Riboflavin, Lumiflavin, Lumichrom)
		Bacteriochlorophyll
		Coumaric Acid