Alex Krause
Alex G. Krause, Ph.D.
Scientist
Electrical Engineering & Computer Science
  • Los Angeles

At Exponent, Dr. Krause’s project experience includes Li-ion battery failures, safety of next-gen wearables, arc-flash incident investigation, cosmetic device safety, medical device sensors and high voltage equipment failure investigation. This has included extensive research of UL/IEC standards compliance requirements. Working with Exponent’s human factors group he has also assisted in the review of training practices for technical support staff. Dr. Krause’s doctoral research spanned from inertial sensors and quantum mechanics, to nanofabrication of chip-scale MEMS and optical devices, and automated instrument control.

He has performed frequency and time-domain finite element modeling of opto-mechanical elements , taking advantage of algorithmic optimization techniques. He also has experience characterizing the optical and mechanical properties of low-loss thin-film materials. He has 5 publications in top scientific journals and 1 granted patent (with another pending).

While a graduate researcher at the California Institute of Technology, he worked with an industry partner to design and fabricate photonic elements for integration of on-chip lasers with state of the art micro-mechanical accelerometers.

Previously, he has worked as a software developer writing code to emulate Field Programmable Gate Array (FPGA) chips in the reading of audio/video files. At Boston University’s Optical Characterization and Nanophotonics Laboratory, he spent 3 years studying fiber-optic microscopes and spectral switch anomalies in focused optical fields.

CREDENTIALS & PROFESSIONAL HONORS

  • Ph.D., Applied Physics, California Institute of Technology (Caltech), 2015
  • M.S., Applied Physics, California Institute of Technology (Caltech), 2014
  • B.A., Physics, Boston University, 2009

Publications

Riedinger R, Hong S, Norte RA, Slater JA, Shang J, Krause AG, Anant V, Aspelmeyer M, Gröblacher S. Non-classical correlations between single photons and phonons from a mechanical oscillator Nature 2016; 18.01.2016

Krause AG, Hill JT, Ludwig M, Safavi-Naeini AH, Chan J, Marquardt F, Painter O. Nonlinear radiation pressure dynamics in an optomechanical Crystal Physical Review Letters 2015; 115:233601.

Krause AG, Winger M, Blasius TD, Lin Q, Painter O. A high-resolution microchip optomechanical accelerometer. Nature Photonics 2012; 6:768–772.

Safavi-Naeini AH, Chan J, Hill JT, Mayer Alegre TP, Krause AG, Painter O. Observation of quantum motion of a nanomechanical resonator. Physical Review Letters 2012; 108:033602.

Chan J, Mayer Alegre TP, Safavi-Naeini AH, Hill JT, Krause AG, Gröblacher S, Aspelmeyer M, Painter O. Laser cooling of a nanomechanical oscillator into its quantum ground state. Nature 2011; 478:89–92.

Patents

US Patent 8849075 B2: Systems and Methods for Tuning a Cavity, September 2014 (Painter O, Winger M, Lin Q, Safavi-Naeini AH, Mayer-Alegre TP, Blasius TD, and Krause AG).

US Patent Application PCT/US2013/028763: Optomechanical accelerometer, September 2013 (Oskar Painter, M. Winger, Q. Lin, A. G. Krause, T. D. Blasius).

Prior Experience

Scientific Consultant, Technical University of Delft, 2015

Research Assistant, CalTech Quantum Photonics Group, 2009–2015

Software Developer, Tenesix Inc., 2008–2009

Research Assistant, BU Optical Characterization and Nanophotonics Laboratory, 2006–2009

Professional Affiliations

Institute of Electrical and Electronics Engineers—IEEE (member)

National Association of Fire Investigators—NAFI (member)

Project Experience

Worked with large biomedical devices firm to review technological solution for distal pressure sensing inside the heart’s left ventricle.

Aided client in reviewing the electrical safety of a potential supplier’s cosmetic device.

Performed successful recreation testing of wall-plug adapters which were experiencing extreme fire incidents in the field.

Investigation of several failed Li-ion battery packs including recovering BMU data, X-ray imaging, and SEM/EDS analysis.

Helped lead a 3-day multi-party investigation of a failed high voltage bushing.

Led 3-person team to develop optical on-chip MEMs accelerometer. 

Worked with industry partner to combine on-chip accelerometers with integrated lasers and photodetectors for next-generation inertial sensors. 

Designed on-chip optical MEMs gyroscope. 

Developed algorithmic optimization code to design an improved photonic crystal that met specified lithographic constraints of existing foundry facility. 

Designed new fabrication technique that greatly simplified engineering of nano-photonic accelerometers while increasing device density by a factor of 10. Technique has now been used for projects at CalTech, Yale, and Harvard. 

Employed CAD software to design improved chip-carrier capable of protecting sensitive micro-mechanical devices during processing.

Additional Information

Peer Reviewer

Optica InfoBase