Kaspar, Peter

ETH Zürich Peter Kaspar Institut f. Elektronik ETZ H 85 Gloriastrasse 35 8092 Zürich Phone: +41 44 632 40 22 E-Mail:

Peter Kaspar received his MSc. degree in physics from ETH Zurich in 2005. He carried out his master thesis at the Ultrafast Laser Physics Lab, studying high harmonic generation in noble gases using ultrashort laser pulses. In 2006 he joined the Communication Photonics Group at IfE, adding an active branch to the photonic crystals project together with Roman Kappeler. He works on the development of III/V semiconductor technology and on the optical characterization of active and passive nano-structured photonic devices.

Research Interests

• Optical waveguide theory
• Electromagnetic wave propagation in periodic media
• Semiconductor micro- and nanofabrication technology (EBL, RIE, PVD, PECVD, wet etching, etc.)
• Quantum well lasers
• Active photonic crystal devices
• Responsible for ICP-RIE machine in FIRST (2007 - 2011)

Publications

• Design proposal for a low loss in-plane active photonic crystal waveguide with vertical electrical carrier injection
  Roman Kappeler, Peter Kaspar, Peter Friedli and Heinz Jäckel
  (2012), in: Opt. Express, 20:8(9264-9275)
  [ BiBTeX RIS PDF DOI URL ]
• Photonic-crystal membranes for optical detection of single nano-particles, designed for biosensor application
  Jon Olav Grepstad, Peter Kaspar, Olav Solgaard, Ib-Rune Johansen and Aasmund S. Sudbø
  (2012), in: Opt. Express, 20:7(7954-7965)
  [ BiBTeX RIS PDF DOI URL ]
• Three operation modes for Tbit/s all-optical switching with intersubband transitions in InGaAs/AlAs/AlAsSb quantum wells
  Yuriy Fedoryshyn, Ping Ma, J. Faist, Peter Kaspar, Roman Kappeler, M. Beck, J. Holzman and Heinz Jäckel
  (2012), in: Quantum Electronics, IEEE Journal of, PP:99(1)
  [ BiBTeX RIS DOI ]

• Compact inline resonant photonic crystal Fabry-Pérot cavities for TM-polarized light
  Ping Ma, Peter Kaspar, Yuriy Fedoryshyn, Patric Strasser and Heinz Jäckel
  (2011), in: IEEE Photon. Technol. Lett., 23:4(224-226)
  [ BiBTeX RIS DOI URL ]
• Limitations of Cl2/O2-based ICP-RIE of deep holes for planar photonic crystals in InP
  Peter Kaspar, Christopher Fougner, Roman Kappeler and Heinz Jäckel
  (2011), in: Phys. Status Solidi C, 9:2(239-242)
  [ BiBTeX RIS DOI URL ]
• Loss-relevant structural imperfections in substrate-type photonic crystal waveguides
  Roman Kappeler, Peter Kaspar and Heinz Jäckel
  (2011), in: Lightwave Technology, Journal of, 29:21(3156 -3166)
  [ BiBTeX RIS DOI URL ]
• Propagation loss computation of W1 photonic crystal waveguides using the cutback technique with the 3D-FDTD method
  Roman Kappeler, Peter Kaspar and Heinz Jäckel
  (2011), in: Photonics and Nanostructures - Fundamentals and Applications, 9:3(235 - 247)
  [ BiBTeX RIS DOI URL ]
• Relevance of the light line in planar photonic crystal waveguides with weak vertical confinement
  Peter Kaspar, Roman Kappeler, Daniel Erni and Heinz Jäckel
  (2011), in: Opt. Express, 19:24(24344-24353)
  [ BiBTeX RIS PDF DOI URL ]
• Self-aligned mask renewal for anisotropically etched circular micro- and nanostructures
  Peter Kaspar, Sebastian Holzapfel, Erich J. Windhab and Heinz Jäckel
  (2011), in: J. Micromech. Microeng., 21:11(115003)
  [ BiBTeX RIS DOI URL ]

• Air-bridge contact fabrication for in-plane active photonic crystal devices
  Peter Kaspar, Roman Kappeler, Peter Friedli and Heinz Jäckel
  in: 22nd International Conference on Indium Phosphide and Related Materials, pages 304-307, 2010
  [ BiBTeX RIS PDF DOI URL ]
• Characterization of Si volume- and delta-doped InGaAs grown by molecular beam epitaxy
  Yuriy Fedoryshyn, M. Beck, Peter Kaspar and Heinz Jäckel
  (2010), in: Journal of Applied Physics, 107(093710)
  [ BiBTeX RIS DOI URL ]
• Compact and integrated TM-pass photonic crystal waveguide polarizer in InGaAsP-InP
  Ping Ma, Patric Strasser, Peter Kaspar and Heinz Jäckel
  (2010), in: IEEE Photonics Technology Letters, 22:24(1808-1810)
  [ BiBTeX RIS DOI URL ]
• Low-loss photonic crystal defect waveguides and taper designs in InP/InGaAsP for TM-polarized light
  Ping Ma, Peter Kaspar and Heinz Jäckel
  (2010), in: Japanese Journal of Applied Physics, 49(06GG06)
  [ BiBTeX RIS DOI URL ]
• Silicon nitride hardmask fabrication using a cyclic CHF3-based reactive ion etching process for vertical profile nanostructures
  Peter Kaspar, Yogesh Jeyaram, Heinz Jäckel, Annette Foelske, Rüdiger Kötz and Sandro Bellini
  (2010), in: J. Vac. Sci. Technol. B, 28:6(1179-1186)
  [ BiBTeX RIS DOI URL ]

• InP-based planar photonic crystal waveguide in honeycomb lattice geometry for TM polarized light
  Ping Ma, Peter Kaspar, Yuriy Fedoryshyn, Patric Strasser and Heinz Jäckel
  (2009), in: Optics Letters, 34:10(1558-1560)
  [ BiBTeX RIS DOI URL ]

• Fabrication of 2D-InP photonic crystals by means of hole-etching using focused ion beam and characterization of the hole shape, damage and surface roughness induced by the fabrication process
  V. Callegari, Peter Kaspar, Patric Strasser, Urs Sennhauser and H. Jäckel
  in: Workshop FIB for Photonics, pages 30-33, 2008
  [ BiBTeX RIS PDF URL ]
• The impact of metallic contacts on propagation losses of an underlying photonic crystal waveguide
  Peter Kaspar, Roman Kappeler, Fouad Karouta, Franck Robin, Patric Strasser and Heinz Jäckel
  in: Proc. SPIE 7031, 2008
  [ BiBTeX RIS DOI URL ]
• Three level masking for improved aspect ratio InP-based photonic crystals
  Fouad Karouta, Boudewijn Docter, Peter Kaspar, Erik-Jan Geluk and Meint K. Smit
  in: Proc. 20th International Conference on Indium Phosphide and Related Materials, pages 508-511, IEEE, 2008
  [ BiBTeX RIS PDF DOI URL ]

• Very high aspect ratio of photonic crystals holes in InP
  Fouad Karouta, Boudewijn Docter, Peter Kaspar, Erik-Jan Geluk and Meint K. Smit
  in: Proc. Symposium IEEE/LEOS Benelux Chapter, pages 227-230, 2007
  [ BiBTeX RIS PDF URL ]

Supervised Student Projects

• Robert Blattmann: "On-Chip Laser Coupling into Membrane Photonic Crystal Waveguides", Semester Thesis, HS09
• Baran Eren: "Active Photonic Crystal Waveguides", Master Thesis, FS09
• Adrian Scherer: "Fabrication of Narrow Electrical Contacts on Patterned Nanostructures", Semester Thesis, HS08
• Peter Friedli: "Electrical Characterization of Contacts for Active Photonic Crystals", Master Thesis, FS08
• Yogesh Jeyaram: "Optimisation of the RIE and ICP Etching Process", Semester Thesis, FS08
• Diego Marti: "Electrical Contacts for Active Photonic Crystal Devices", Semester Thesis, FS07

Links

• Communication Photonics Group
• FIRST Laboratory