Thilo Kraetschmer

Ph.D. expected Spring 2009

Project

Design and implementation of rugged, hyperspectral, time-division-multiplexed and frequency-division-multiplexed lasers for spectroscopic sensing applications in the Near-Infrared.

Long Term Goals

Education

• Ph.D.: Mechanical Engineering, UW-Madison, currently pursuing
• MS: Mechanical Engineering, UW-Madison, Dec. 2006
• MS: Cybernetics, University of Stuttgart, Germany, Aug. 2006

Experience

• UW Engine Research Center, research assistant, 2005-present
• UW Powertrain Control Research Laboratory, spring 2005
• UW Electric Machines and Power Electronics Consortium, research assistant, Aug. 2004 - March 2005
• Daimler Truck Product Creation / Mercedes-Benz Mechatronics Advanced Development, internship, Oct. 2003 - July 2004
• University of Stuttgart, Germany, Institute for Plasma Research, student hourly, Oct. 2001 - Feb. 2003

Publications

• L. Ma, W. Cai, A. W. Caswell, T. Kraetschmer, S. T. Sanders, S. Roy, and J. R. Gord, "Tomographic imaging of temperature and chemical species based on hyperspectral absorption spectroscopy, " Opt. Exp., Vol. 17, Issue 10, pp. 8602-8613, 2009
• T. Kraetschmer and S. T. Sanders, "Ultrastable Fourier Domain Mode Locking Observed in a Laser Sweeping 1363.8 – 1367.3 nm" presented at the Conference on Lasers and Electro-Optics (CLEO) 2009
• J. W. Walewski, T. Kraetschmer and S. T. Sanders, "Enhancement of cavity chirp by combining dispersion media of high- and low (anomalous) dispersion" submitted to Optics & Laser Technology
• T. Kraetschmer, D. Dagel and S. T. Sanders, "Simple Multiwavelength Time-Division Multiplexed Light Source for Sensing Applications," Opt. Lett., vol. 33, pp. 738-740, 2008.
• T. Kraetschmer, C. Lan and S. T. Sanders, "Multiwavelength, Frequency-Division-Multiplexed Light Source Based on Dispersion Mode Locking," IEEE Photon. Technol. Lett., vol. 19, pp. 1607-1607 - 1609, 2007.
• T. Kraetschmer, J. W. Walewski and S. T. Sanders, "Continuous-wave frequency comb Fourier transform source based on a high-dispersion cavity," Opt. Lett., vol. 31, pp. 3179-81, 11/01, 2006.
• T. Kraetschmer, J. W. Walewski and S. T. Sanders, "All-fiber laser for generating interlaced continuous-wave frequency combs and application to Fourier-transform spectroscopy," Optical Engineering, vol. 45, pp. 050502, 2006.
• T. Kraetschmer and S. T. Sanders, "Enhancing the spectral coverage of a CW frequency comb using closed-loop control of an intracavity programmable spectral filter," submitted to Optics & Laser Technology
• T. Kraetschmer, A. W. Caswell, K. D. Rein, S. T. Sanders, S. Roy, D. T. Shouse, B. V. Kiel and J. R. Gord, "Multi-spectral, multi-path absorption spectroscopy at 30 kHz using time-division multiplexed lasers," 47th AIAA Aerospace Sciences Meeting, Orlando, USA, 5-8 January, 2009.
• T. Kraetschmer and S. T. Sanders, "Simple Multiwavelength Time-Division Multiplexed Laser for H2O Absorption Measurements," presented at the Conference on Lasers and Electro-Optics (CLEO), San Jose, USA, 4-9 May, 2008.
• T. Kraetschmer and S. T. Sanders, "Simple Multiwavelength Time-Division Multiplexed Light Source for Sensing Applications," presented at the 14th Gordon Research Conference on Laser Diagnostics in Combustion, Oxford, England, 12-17 August, 2007.
• T. Kraetschmer and S. T. Sanders, "Hyperspectral Sensors PTAP's Role in their Development, and their practical Applications such as Engine Gas Thermometry," presented at the Photonics Technology Access Program Annual Review, Maui, USA, 19-20 April, 2007.
• T. Kraetschmer and S. T. Sanders, "Continuous-Wave Comb Fourier Transform Laser Sources," presented at the Fourier Transform Spectroscopy Topical Meeting and Tabletop Exhibit, Santa Fe, USA, 11-15 February, 2007.
• T. Kraetschmer and S. T. Sanders, "Hyperspectral Absorption Spectroscopy Based on Femtosecond Lasers," presented at the 37th Winter Colloquium on Physics of Quantum Electronics, Snowbird, USA, 2-6 January, 2007.
• J. W. Walewski, T. Kraetschmer and S. T. Sanders, "Evaluating the potential of multi-color heterodyne absorption spectroscopy in turbulent combustion," in Laser Applications to Chemical, Security and Enviromental Analysis (10th Topical Meeting and Tabletop Exhibit) on CD-ROM (OSA Incline Village, NV, 2006) Presentation Number TuE10, pp. 1-3, 2006.

Sponsors