Publications & Presentations

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• T. G. Ulmer, B. R. Washburn, C. M. Verber, S. E. Ralph, and A. J. SpringThorpe, "Resonant-cavity-enhanced surface-emitted second-harmonic generation optimized for short pulses," 2001 Ultrafast Electronics and Optoelectronics Conference, Lake Tahoe, Nevada, January 10-12, 2001.

 
• T. G. Ulmer, M. C. Gross, K. M. Patel, J. T. Simmons, P. W. Juodawlkis, B. R. Washburn, W. S. Astar, A. J. SpringThorpe, R. P. Kenan, C. M. Verber, and S. E. Ralph, "160-Gb/s optically time-division multiplexed link with all-optical demultiplexing," IEEE J. Lightwave Technol., vol. 18, no. 12, Dec. 2000.

 
• T. G. Ulmer, B. R. Washburn, A. J. SpringThorpe, C. M. Verber, and S. E. Ralph, "Microcavity-enhanced surface-emitted second-harmonic generation for signal processing in the ps and fs regimes," 2000 Ultrafast Phenomena Confrence, Charleston, SC, July 9-13, 2000.

 
• T. G. Ulmer, M. C. Gross, K. M. Patel, R. P. Kenan, S. E. Ralph, and C. M. Verber, "Optical time-division demultiplexing with resonant-cavity-enhanced surface-emitted second-harmonic generation," proceedings from the Conference on Lasers and Electro-Optics (CLEO), San Francisco, CA, May 7-12, 2000, p. 195-196.

 
• T. G. Ulmer, B. R. Washburn, R. P. Kenan, C. M. Verber, S. E. Ralph, and A. J. SpringThorpe, "Resonant-cavity-enhanced surface-emitted second-harmonic generation in the sub-ps regime," proceedings from the Conference on Lasers and Electro-Optics (CLEO), San Francisco, CA, May 7-12, 2000, p. 362-363.

 
• B. R. Washburn, J. A. Buck, and S. E. Ralph, "Transform-limited spectral compression due to self-phase modulation in fibers," Opt. Lett., vol. 25, no. 7, pp. 445-447, April 1, 2000.

 
• P. W. Juodawlkis and S. E. Ralph, "Hole-induced transient bandgap renormalization: A mechanism for photo-induced absorption in defect-engineered semiconductors,"  Appl. Phys. Lett., vol. 76, no. 13, pp. 1722-1724, March 27, 2000.

• T. G. Ulmer, M. C. Gross, K. M. Patel, B. R. Washburn, W. S. Astar, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with resonant-cavity-enhanced surface-emitted second-harmonic generation," 1999 Annual Meeting of the Optical Society of America, Santa Clara, CA, Sept. 26-30, 1999.

• B. R. Washburn, J. A. Buck, and S. E. Ralph,  "Temporal and spectral characaterization of an ultrashort laser pulse in optical fiber by frequency-resolved optical gating,"  1999 Annual Meeting of the Optical Society of America, Santa Clara, CA, Sept. 26-30, 1999.

• J. T. Simmons, B. R. Washburn, T. G. Ulmer, W. S. Astar, S. E. Ralph, R. P. Kenan, and C. M. Verber, “Femtosecond pulse performance of an integrated optical tapped delay line,” 1999 Annual Meeting of the Optical Society of America, Santa Clara, CA, Sept. 26-30, 1999.

• T.G. Ulmer, M.C. Gross, W.S. Astar, P.W. Juodawlkis, B.R. Washburn, A.J. SpringThorpe, R.P. Kenan, C.M. Verber, S.E. Ralph. "Ultrafast optical devices for high-speed optical data links," Materials and Devices for Photonic Circuits, SPIE 44th annual meeting, Denver, CO, July 21-22, 1999.

• T. G. Ulmer, R.K. Tan, Z. Zhou, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Two-photon absorption-induced self-phase modulation in GaAs-AlGaAs waveguides for surface-emitted second-harmonic generation,” Opt. Lett., vol. 24, no. 11, pp. 756-758, June 1, 1999.

• T. G. Ulmer, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, S. E. Ralph, R. P. Kenan, C. M. Verber, and A. J. SpringThorpe, “Optical time-division demultiplexing with surface-emitted second-harmonic generation,” proceedings from the Conference on Lasers and Electro-Optics (CLEO), Baltimore, MD, May 23-28, 1999, p. 377.

• T. G. Ulmer, R.K. Tan, W. S. Astar, P. W. Juodawlkis, B. R. Washburn, Z. Zhou, S. E. Ralph, C.M. Verber, R. P. Kenan, and A. J. SpringThorpe, “Progress towards a surface-emitted second-harmonic generation-based demultiplexer for optically time-division multiplexed communications,” 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

• M. C. Gross, P. W. Juodawlkis, J. S. Rodgers, S. E. Ralph, R. P. Kenan, C. M. Verber, and D. T. McInturff, "Passive mode-locking of a fiber laser by an ultrafast low-temperature-grown InGaAs/InAlAs multiple quantum well saturable absorber," 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

• P. W. Juodawlkis, Z. Zhou, S. E. Ralph, C. M. Verber, D. T. McInturff, and S. E. Chen, "Optical properties of selectively low-temperature-grown InGaAs/InAlAs multiple quantum well waveguides," 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

• T. Conese, C. M. Verber, R. P. Kenan, M. N. Armenise, and F. Ricco, "Performance comparison of ultrafast all-optical integrated optic logic gates in nonlinear polymers and III-V semiconductors," 1998 Annual Meeting of the Optical Society of America, Baltimore, MD, Oct. 4-9, 1998.

• S.E. Ralph, B. R. Washburn, S.S. Prabhu, A. Brown, G. May, R. Metzger, T. Brown, G. Dagnall, T. Kim, K. Lee, E. Roberts, C. Yi. "Ultrafast carrier lifetimes and electronic compensation in low-temperature-grown Be-doped InGaAs,"  Electronic Materials Conference (EMC), June 1998.

• P. W. Juodawlkis, D. T. McInturff, and S. E. Ralph, "Subpicosecond nonlinear absorption recovery dynamics of low-temperature-grown InGaAs/InAlAs multiple quantum well p-i-n structures," proceedings from the OSA Spring Topical Meeting on Ultrafast Electronics and Optoelectronics, Lake Tahoe, NV, 1997, pp. 284-289.

• P. W. Juodawlkis, J. L. A. Hughes, C. M. Verber, and K. Grimble, "Time alignment of cells with arbitrary message payloads," proceedings from the Optical Fiber Communication (OFC) Conference, San Jose, CA, 1996, pp. 110-111.

• S. E. Ralph, M. C. Hargis, P. W. Juodawlkis, C. M. Verber, P. Chin, and J. M. Woodall, "Picosecond optical response of low growth temperature InGaAs/InAlAs multiple quantum wells," presented at the International Quantum Electronics Conference (IQEC), Sydney, Australia, 1996.

• S. E. Ralph, M. C. Hargis, P. W. Juodawlkis, C. M. Verber, P. Chin, and J. M. Woodall, "Femtosecond optical nonlinearities of low-growth temperature InGaAs multiple quantum wells," presented at the American Physical Society Annual Meeting, St. Louis, MO, 1996.

• P. W. Juodawlkis, D. T. McInturff, and S. E. Ralph, "Ultrafast carrier dynamics and optical nonlinearities of low-temperature-grown InGaAs/InAlAs multiple quantum wells," Appl. Phys. Lett., vol. 69, pp. 4062-4064, Dec. 1996.

• M. L. Jones, R. P. Kenan, and C. M. Verber, "Rectangular characteristic gratings for waveguide input and output coupling," Appl. Opt., vol. 34, no. 20, pp. 4149-4158, July 10, 1995.

• C. M. Verber, Jinkee Kim, Ronson Tan, Yuan-Ning Weng and Zhiping Zhou, "Progress toward the development of a 100 Gb/s optical data link," Proc. SPIE, vol. 2481, pp. 36-43, April 1995.

• M. K. McGaugh, C. M. Verber, and R. P. Kenan, "Modified integrated optic Fresnel lens for waveguide-to-fiber coupling," Appl. Opt., vol. 34, no. 9, pp. 1562-1568, March 20, 1995.

• G. S. Agapiou and C. M. Verber, "Fabrication and characterization of double-diffused waveguides," Opt. & Quantum Electron., vol. 27, pp. 43-48, 1995.

• Ronson K. Tan, C. M. Verber and A. J. Springthorpe, "Integrated-optical serial-to-parallel converter for 100 Gb/s time demultiplexing", Photon. Tech. Lett., vol. 6, pp. 1228-1231, Oct. 1994.

• J. T. Gallo and C. M. Verber, "Model for the effects of material shrinkage on volume holograms," Appl. Opt., vol. 33, no. 29, pp. 6797-6804, Oct. 10, 1994.

• Joseph L.A. Hughes and C. M. Verber, "Architectures and devices for an all-optical routing switch", Proc. SPIE, vol. 2024, pp. 235-243, 1993.

• H. Toda and C. M. Verber, "Simple technique to reveal a slow nonlinear mechanism in a z-scanlike n₂ measurement," Opt. Lett., vol. 17, no. 19, pp.1379-1381, Oct. 1, 1992.

• Y. Bao, C. M. Verber, and R. P. Kenan, "Influence of grating shapes on beam profiles for right-angle guided-wave diffraction," Opt. Lett., vol. 17, no. 8, pp. 595-597, April 15, 1992.

• G. S. Agapiou and C. M. Verber, "Method for measuring the mode-index ratio of two regions in a planar waveguide," Appl. Opt.,  vol. 31, no. 9, pp. 1257-1260, March 20, 1992.

• K. Hsu, C. M. Verber, and R. Roy, "Pulse fluctuation statistics of an actively mode-locked external-cavity semiconductor laser," Appl. Phys. Lett., vol. 60, no. 3, pp. 307-309, Jan. 20, 1992.

• C. M. Verber and J.L.A. Hughes, "Technologies for an all-optical fiber network," proceedings of the Second IEEE International Workshop of Photonic Networks, Components and Applications, Montebello, Quebec, Canada, March 9-11, 1992.

• K. Chiang, C. J. Summers, and R. P. Kenan, "Direct measurement of the effective refractive indies of GaAs/AlGaAs slab waveguides: a new technique," Appl. Opt., vol. 30, no. 18, pp. 2570-2574, June 20, 1991.

• K. Hsu, C. M. Verber, and R. Roy, "Stochastic mode-locking theory for external-cavity semiconductor lasers," J. Opt. Soc. Am. B, vol. 8, no. 2, pp. 262-275, Feb. 1991.

• C. M. Verber, "Integrated optical devices for high data rate optical communication", proceedings of the First IEEE International Workshop of Photonic Networks, Components and Applications, Montebello, Quebec, Canada, Oct. 11-13, 1990, pp. 36-45.

• C. M. Verber, R. P. Kenan, R. K. Tan, and Y. Bao, "Integrated optical devices for high data rate serial-to-parallel conversion," Proc. SPIE, vol. 1374, pp. 68-73, 1990.