Nick Lemberger

Ph.D. student

Room 213
Corrensstraße 2
48149 Münster

+49 (0) 251 83 33600
n.lb@uni-muenster.de

Research Topics

Nonlinear Microscopy and Detector Development

In my Ph.D. I am working on stimulated Raman scattering, which can be used in microscopes to determine the distribution of chemical components in a sample. For such microscopes, I develop specialized photodetectors and methods to improve the image quality and to eliminate unwanted signals. I find working on this topic very exciting because of its application relevance and because it combines my passion for electrical engineering and my interest in microscopy.

Publications

Research Articles (Journals)

Wallmeier, Kristin, Lemberger, Nick S., and Fallnich, Carsten. 2026. “Two- and three-beam photothermal vs. conventional stimulated Raman scattering.” Applied Physics B: Lasers and Optics 132 (57). doi: 10.1007/s00340-026-08660-x.
Luna, Saara K., Kuzma, Benjamin A., Lemberger, Nick-Sydney, Wallmeier, Kristin, Fallnich, Carsten, and Evans, Conor L. 2026. “Adaptive optics stimulated Raman scattering microscopy for topical product pharmacokinetic imaging.” Biomedical Optics Express 17 (1): 125–144. doi: 10.1364/BOE.576409.
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2026. “Automated correction of optical attenuation in stimulated Raman scattering imaging.” Optics Express 34 (6): 10736–10748. doi: 10.1364/OE.580899.
Wallmeier, Kristin, and Lemberger, Nick S. Fallnich Carsten. in Kürze. “Photothermal stimulated Raman scattering with two beams only.” .
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2025. “High-bandwidth noise-reduced absorption-corrected autobalanced detection.” Optics Express 33 (1): 62–74. doi: 10.1364/OE.540254.
Wallmeier, Kristin, Gao, Ming, Lemberger, Nick S, and Fallnich, Carsten. 2025. “Waveguide-based optical parametric oscillator for coherent Raman scattering applications.” Applied Physics B: Lasers and Optics 131 (36). doi: 10.1007/s00340-025-08397-z.
Tu, Dandan, Lemberger, Nick-Sidney, Wallmeier, Kristin, Riseman, Jackson, Kuzma, Benjamin A., Wei, Yuxiao, Khoo, Ting Chean, Rantou, Elena, Ghosh, Priyanka, Luke, Markham C., Raney, Sam G., Fallnich, Carsten, and Evans, Conor L. 2025. “Improved Dual-Modality Bioequivalence Evaluation of Topical Formulations Within Human Skin Using Stimulated Raman Scattering Microscopy.” Pharmaceutics 17 (9) 1193. doi: 10.3390/pharmaceutics17091193.
Wallmeier, Kristin, Würthwein, Thomas, Lemberger, Nick, Brinkmann, Maximilian, Hellwig, Tim, and Fallnich, Carsten. 2023. “Frequency modulation stimulated Raman scattering scheme for real-time background correction with a single light source.” Biomedical Optics Express 14 (1): 315–325. doi: 10.1364/BOE.476513.
Würthwein, Thomas, Wallmeier, Kristin, Brinkmann, Maximilian, Hellwig, Tim, Lüpken, Niklas M., Lemberger, Nick S., and Fallnich, Carsten. 2021. “Multi-color stimulated Raman scattering with a frame-to-frame wavelength-tunable fiber-based light source.” Biomedical Optics Express 12 (10): 6228–6236. doi: 10.1364/BOE.436299.

Conference Contributions

Research Articles in Edited Proceedings (Conferences)

Khoo, Ting Chean Luna Saara K., Lemberger, Nick-Sydney, Wallmeier, Kristin, Fallnich, Carsten, and Evans, Conor L. in Kürze. “Signal correction of stimulated Raman scattering (SRS) signal loss from skin structure and drug application.” in Visualizing and Quantifying Drug Distribution in Tissue X, edited by Conor L. Evans and Kin Foong Chan. San Francisco.
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2025. “High-bandwidth noise-reduced absorption-corrected autobalanced detection for stimulated Raman scattering microscopy.” in Proceedings of SPIE Photonics West, 13332, edited by SPIE. San Francisco: SPIE. doi: 10.1117/12.3041877.
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. in Kürze. “Towards fully loss-corrected SRS imaging.” in Proceedings of CLEO Europe/EQEC 2025
Fallnich, Carsten, Wallmeier, Kristin, Gao, Ming, Lemberger, Nick-Sidney, Timmerkamp, Maximilian, and Lüpken, Niklas M. 2025. “A route to chip-based ultrafast light sources for coherent Raman imaging.” Preprint. in Proceedings of 838. Wilhelm und Else Heraeus-Seminar, edited by Wilhelm und Else Heraeus-Stiftung. Bad Honnef: Wilhelm und Else Heraeus-Stiftung.
Tu, Dandan, Lemberger, Nick Sidney, Wallmeier, Kristin, Riseman, Jackson, Kuzma, Benjamin A., Wei, Yuxiao, Khoo, Ting Chean, Ghosh, Priyanka, Raney, Sam G., Luke, Markham C., Fallnich, Carsten, and Evans, Conor L. 2024. “Dual modality monitoring of topical formulations within human skin using stimulated Raman scattering (SRS) microscope.” in Proc. SPIE PC12821, edited by SPIE. San Francisco: SPIE. doi: 10.1117/12.3001122.
Wallmeier, Kristin, Würthwein, Thomas, Hellwig, Tim, Brinkmann, Maximilian, Lemberger, Nick, and Fallnich, Carsten. 2023. “Simplified FM SRS for up to 8.3-fold contrast improvement.” in Proceedings on the Focus on Microscopy 2023, edited by Focus on Microscopy. Porto: Focus on Microscopy.
Wallmeier, Kristin, Würthwein, Thomas, Hellwig, Tim, Brinkmann, Maximilian, Lemberger, Nick, and Fallnich, Carsten. 2023. “Single-source FM SRS with pixel-to-pixel contrast improvement.” in 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), edited by IEEE. München: Wiley-IEEE Press. doi: 10.1109/CLEO/Europe-EQEC57999.2023.10232588.
Wallmeier, Kristin, Würthwein, Thomas, Hellwig, Tim, Brinkmann, Maximilian, Lemberger, Nick, and Fallnich, Carsten. 2023. “Single low-noise fiber-based light source for FM SRS.” in Proceedings of RamanFest 2023, edited by Phantoms Foundation. Paris: Phantoms Foundation.
Lemberger, Nick, Wallmeier, Kristin, and Fallnich, Carsten. 2023. “A pixel-by-pixel correcting autobalanced detector for SRS microscopy.” in Proceedings of RamanFest 2023, edited by Phantoms Foundation. Paris: Phantoms Foundation.
Kuzma, Benjamin, Würthwein, Thomas, Lemberger, Nick S. Wallmeier Kristin, Fallnich, Carsten, Evans, Conor L., Troensegaard Nielsen, Kim, Bastholm Jensen, Louise, Svensson, Lars, and Tran, Jean-Luc. 2022. “Cutaneous pharmacokinetics of escalating Ruxolitinib formulation doses utilizing a coherent Raman imaging pipeline.” in Proceedings Volume PC11938, edited by SPIE. San Francisco: SPIE.
Wallmeier, Kristin, Würthwein, Thomas, Hellwig, Tim, Brinkmann, Maximilian, Lemberger, Nick, and Fallnich, Carsten. 2022. “Simplified FM CARS and FM SRS with up to 18-fold contrast improvement.” in Proceedings of the 27th International Conference on Raman Spectroscopy, edited by International Conference on Raman Spectroscopy. Long Beach: Materials Research Society.
Brinkmann, Maximilian, Hellwig, Tim, Würthwein, Thomas, Wallmeier, Kristin, Lemberger, Nick S., and Fallnich, Carsten. 2021. “Multicolor Stimulated Raman Scattering Microscopy with a Widely Tunable Fiber Laser.” in OSA Technical Digest, edited by Optica Publishing Group. München: Optica.
Brinkmann, Maxilimian, Hellwig, Tim, Würthwein, Thomas, Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2021. “Multicolor Stimulated Raman Scattering Microscopy with a Widely Tunable Portable Light Source.” in Proceedings of the Focus on Microscopy 2021, edited by Focus on Microscopy. Porto: Focus on Microscopy.
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. in Kürze. “Automated correction of optical attenuation in stimulated Raman scattering imaging.” in Proceedings of 24th European Conference on Nonlinear Spectroscopy (ECONOS), edited by Friedrich-Schiller-Universität Jena. Friedrich-Schiller-Universität Jena.

Abstracts in Digital Collections (Conferences)

Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2025. “Amplitude-to-phase detection scheme for improved signal-to-noise ratio in stimulated Raman scattering.” in Proceedings of Photonics West 2025
Wallmeier, Kristin, Lemberger, Nick S., and Fallnich, Carsten. in Kürze. “Aperture-less stimulated Raman photothermal microscopy in epi-configuration.” Preprint. contribution to the CLEO Europe/EQEC, München
Wallmeier, Kristin, Lemberger, Nick, and Fallnich, Carsten. 2025. “Epi-detected stimulated Raman photothermal microscopy.” Preprint. contribution to the 838. WE-Heraeus-Seminar: Manipulating Molecular Electronic Properties by Vibrational Excitations: Novel Spectroscopies and Microscopies, Bad Honnef , edited by Bredenbeck Jens and Xiong Wei.
Lemberger, Nick-Sidney, Wallmeier, Kristin, and Fallnich, Carsten. 2025. “Special detector design for improved SRS imaging.” Preprint. contribution to the 838. WE-Heraeus-Seminar: Manipulating Molecular Electronic Properties by Vibrational Excitations: Novel Spectroscopies and Microscopies, Bad Honnef
Lemberger, Nick S., Wallmeier, Kristin, and Fallnich, Carsten. 2024. “A pixel-by-pixel correcting autobalanced detector for SRS microscopy.” contribution to the Focus on Microscopy, Genua
Wallmeier, Kristin, Würthwein, Thomas, Hellwig, Tim, Brinkmann, Maximilian, Lemberger, Nick, and Fallnich, Carsten. 2023. “Single low-noise fiber-based light source for FM SRS.” contribution to the RamanFest 2023, Paris
Lemberger, Nick, Wallmeier, Kristin, and Fallnich, Carsten. 2023. “A pixel-by-pixel correcting autobalanced detector for SRS microscopy.” contribution to the RamanFest 2023, Paris