MSU Spectrum Lab Research Scientist to Join Scientific Materials to Lead S2CHIP Contract (March 2004)

Kris Merkel, Senior Research Scientist at MSU Spectrum Lab, was hired as Product Manager for S2CHIP technologies at Scientific Materials Corp., a position that includes managing the S2CHIP contract issued from USASMDC.

HBSM 2003 Conference Journal Articles Published in the Journal of Luminescence JLum 107 (March 2004)

Spectrum Lab and affiliated research publications:

  • Multi-Gigahertz radar range processing of baseband and RF carrier modulated signals in Tm:YAG, Merkel, K.D.; Krishna Mohan, R.; Cole, Z.; Chang, T.; Olson, A.; Babbitt, W.R. pp. 62-74. 
  • Wideband radio frequency spectrum analyzer: improved design and experimental results, Lavielle, V.; De Seze, F.; Lorgeré, I.; Le Gouët, J.-L. pp. 75-89. 
  • Demonstration of a continuous scanner and time-integrating correlator using spatial-spectral holography Schlottau, Friso; Wagner, Kelvin H. pp. 90-102. 
  • Broadband demonstrations of true-time delay using linear sideband chirped programming and optical coherent transients, Reibel, R.R.; Barber, Z.W.; Fischer, J.A.; Tian, M.; Babbitt, W.R. pp. 103-113. 
  • Power budget analysis of image-plane storage in spectral hole-burning materials, Neifeld, Mark A.; Randall Babbitt, W.; Krishna Mohan, R.; Craig, Alan E. pp. 114-121. 
  • Numerical modeling of optical coherent transient processes with complex configurations-I. Angled beam geometry, Chang, Tiejun; Tian, Mingzhen; Randall Babbitt, Wm. pp. 129-137.
  • Numerical modeling of optical coherent transient processes with complex configurations-II. Angled beams with arbitrary phase modulations, Chang, Tiejun; Tian, Mingzhen; W. Barber, Zeb; Randall Babbitt, Wm. pp. 138-145. 
  • Optical frequency chirp generation by swept sideband injection locking Cole, Z.; Krishna Mohan, R. pp. 146-149 Abstract | Full Text (HTML) | Article PDF (358 KB) 

MSU optics researchers to receive George Abraham Outstanding Paper Award at GOMACTech 2004 (March 2004)

Kris Merkel of the Spectrum Lab will accept the George Abraham Outstanding Paper Award at the Government Microcircuit Applications and Critical Technology Conference (GOMACTech) 2004 in Monterey, CA, on March 16, 2004. The award is being given for the paper "Demonstration of the Spatial-Spectral Coherent Holographic Integrating Processor (S2-CHIP) for Analog RF Signal Processing Applications", by Kristian D. Merkel, Zack Cole, R. Krishna Mohan and W. Randall Babbitt, Spectrum Lab, Montana State University, which was presented at the GomacTech2003 conference in Tampa, Florida, on April 3, 2003. 

GOMACTech is a conference established primarily to review developments in microcircuit applications for government systems. Established in 1968, the conference has focused on advances in systems being developed by the Department of Defense and other government agencies and has been used to announce major government microelectronics initiatives such as VHSIC and MIMIC, and provides a forum for government reviews. 

MSU Spectrum Lab Group Granted a U.S. patent for "Optical Coherent Transient Continuously Programmed Continuous Processor".

United States Patent 6,680,860 
January 20, 2004 
Inventors: Merkel; Kristian (Bozeman, MT); Babbitt; William (Bozeman, MT) 

Optical Coherent Transient Continuously Programmed Continuous Processor 
Techniques for continuously programming a coherent transient spatial-spectral optical signal processor involve the repeated application of two or more spatially distinct optical programming pulses to a non-persistent hole-burning material to write an accumulated, spatial-spectral population grating with low intensity optical pulses as compared to single shot programming. An optical data stream is introduced on a processing beam, resulting in a processor output signal spatially distinct from all the processing pulses. Programming and processing take place simultaneously, asynchronously and continuously. For accumulated gratings, the frequency stability of the optical source is an important consideration. Assuming a sufficiently stable optical source, simulations show that an accumulated (and maintained) grating in steady state, for both storage of a true-time delay and/or pattern waveform, can be highly efficient using currently available materials, on the order of that predicted for a perfect photon-gated device. An experimental demonstration of the continuous programming concept for true time delays programmed with chirped pulses is presented, showing the accumulation of the grating with low area pulses over time until it reaches steady state, for times longer than the persistence of the material.