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Nanostructure-Empowered Efficient Coupling of Light into Optical Fibers at Extraordinarily Large Angles
Coupling of light from free space to optical fibers is essential for many applications, while commonly used step-index optical fibers provide insufficient coupling efficiencies especially at large angles...
PublikationenTowards an Interpretable Classifier for Characterization of Endoscopic Mayo Scores in Ulcerative Colitis Using Raman Spectroscopy
Ulcerative colitis (UC) is one of the main types of chronic inflammatory diseases that affect the bowel, but its pathogenesis is yet to be completely defined. Assessing the disease activity of UC is vital...
PublikationenSynthesis, characterization and optical properties of ytterbium (III) orthophosphates and their incorporation in different glass matrices
Nanosized hydrated YbPO4•nH2O powders were prepared by precipitation from aqueous solutions. It is shown that the structure, optical properties, and size of the raw particles can be further tailored...
PublikationenUnidirectionality in Bidirectional Fiber Ring Lasers: An Instability Approach
Fiber ring laser schemes are very attractive as they allow a fully integrated system structure. Albeit having many benefits one major shortcoming of ring structures is the native power division due to...
PublikationenEffect of Fiber Length and Loss on the Threshold of Unidirectional Lasing in a Reciprocal All-Fiber Ring Laser
We recently demonstrated unidirectional lasing in a reciprocal all fiber ring laser at full laser operation. With this manuscript we discuss the influence of length and fiber loss on the triggering of...
PublikationenInfluences on the Direction Probabilities for the Direction Instability Phenomenon in Fiber Ring Lasers
Direction instability is a new phenomenon where a reciprocal fiber ring laser initially operates in both directions but spontaneously turns of one lasing direction and switches to unidirectional mode...
PublikationenUnidirectional lasing using loss management in a reciprocal fiber ring laser
We report on the observation of a new phenomenon, occurring in a fiber ring laser. It describes the transition from an initially bidirectional emission of a fully reciprocal fiber ring laser to a unidirectional...
PublikationenRaman18 O-Labeling of Bacteria in Visible and Deep UV-Ranges
Raman stable isotope labeling with 2H, 13C or 15N has been reported as an elegant approach to investigate cellular metabolic activity, which is of great importance to reveal the functions of microorganisms...
PublikationenGiant persistent photoconductivity in monolayer MoS2 field-effect transistors
Monolayer transition metal dichalcogenides (TMD) have numerous potential applications in ultrathin electronics and photonics. The exposure of TMD-based devices to light generates photo-carriers resulting...
PublikationenFiber-based SORS-SERDS System and Chemometrics for the Diagnostics and Therapy Monitoring of Psoriasis Inflammatory Disease in vivo
Psoriasisisconsideredawidespreaddermatologicaldiseasethatcanstronglyaffect thequalityoflife. Currently,thetreatmentiscontinueduntiltheskinsurfaceappearsclinically healed. However, lesions appearing normal...
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