06/20/2007 Optical Society of America Honors Connie J. Chang-Hasnain
WASHINGTON, June 20—Connie J. Chang-Hasnain has been chosen as the Nick Holonyak, Jr. Award winner by the Optical Society of America (OSA), honoring her contributions to the control of diode lasers: vertical-cavity surface-emitting laser arrays, injection locking, and slow light.  The Nick Holonyak, Jr. Award recognizes significant contributions to optics based on semiconductor-based devices and optical materials, including basic science and technological applications. Chang-Hasnain is the John R. Whinnery Chair Professor of Electrical Engineering and Computer Sciences at the University of California, Berkeley where she also serves as the chair of the Nanoscale Science and Engineering Graduate Group and director of the Center for Optoelectronic Nanostructured Semiconductor Technologies.

“Year after year, OSA honors the best and the brightest in the field of optics and photonics and this year is no different,” said Elizabeth Rogan, OSA executive director.  “Connie Chang-Hasnain has contributed to the field in her own unique way, providing leadership, innovation, expertise, service and quality research.  OSA congratulates her on her achievements.”

The Nick Holonyak, Jr. Award was first awarded in 1997.  Chang-Hasnain joins an exceptional group of nine past Holonyak, Jr. Award recipients.

The review process for the Holonyak, Jr. Award is stringent, with all nominees evaluated by a selection committee appointed by OSA’s Board of Directors. The committee reviews a nomination package, including a brief citation of the nominee’s accomplishments, a one-page narrative description of the most significant events in the candidate’s career, a curriculum vitae and a minimum of four letters of reference. The committee then selects one person to receive the award and sends the name to the Board of Directors for final review and approval. 

OSA conferred a total of 17 awards this year for various distinguished achievements in the field of optics.

“The OSA Board of Directors is pleased to honor this year's award recipients and I'm privileged to count these outstanding individuals as my colleagues,” said OSA President Joseph Eberly.

OSA bestows many of these awards during a formal presentation ceremony that will take place at the plenary session of the Society’s annual meeting, Frontiers in Optics, on the morning of Sept. 17 at the Fairmont Hotel in San Jose, Calif. More information about the OSA awards program, previous award winners, and the annual meeting can be found on OSA's Web site at www.osa.org.

About OSA
Uniting more than 70,000 professionals from 134 countries, the Optical Society of America (OSA) brings together the global optics community through its programs and initiatives. Since 1916 OSA has worked to advance the common interests of the field, providing educational resources to the scientists, engineers and business leaders who work in the field by promoting the science of light and the advanced technologies made possible by optics and photonics. OSA publications, events, technical groups and programs foster optics knowledge and scientific collaboration among all those with an interest in optics and photonics. For more information, visit www.osa.org.

 

05/5/2005 Special Seminar Announcement: Dr. Weng Chow, Sandia National Laboratories,  will give a talk  on May 18th at UC Berkeley.   
Wednes, May 18, 2005
521 Cory Hall (Hogan Room), UC Berkeley
10:00-11:00 a.m.                               
(Download the Flyer, Size = 10.6K, Format = PDF )
Talk Tile: Quantum coherences in semiconductor quantum dots

Abstract:

 

Inversionless gain, electromagnetically induced transparency, refractive index enhancement and group-velocity reduction are predicted for semiconductor quantum-dot structures under transient conditions. Substantial deviations from atomic quantum coherence phenomena exist because of many-body effects.  Specifically, the Coulomb interaction involving states of the quantum dots and surrounding quantum wells leads to collision-induced dephasing and population redistribution, as well as to many-body energy and field renormalizations that modify the magnitude, spectral shape and time dependences of quantum coherence effects.  The development of the quantum-dot quantum-coherence theory and the results obtained from its application will be discussed in this talk.
 
Biography:

Weng Chow received the Ph.D. degree in physics from the University of Arizona.  His dissertation work involved fluctuation phenomena in quantum optics.

He was an Associate Professor of Physics and Astronomy at the University of New Mexico before joining Sandia National Laboratories, where he is a Distinguished Member of the Technical Staff.  Weng Chow's primary research interest is in the application of microscopic theory to semiconductor laser device development.  Some of this work is described in two texts, Semiconductor-Laser Physics and Semiconductor-Laser Fundamentals: Physics of the Gain Materials.  His other interests include laser gyros, phased arrays, coupled lasers, quantum optics and optical ignition of pyrotechnics.
Dr. Chow is Adjoint Professor of Optical Sciences at the University of Arizona, and Honorary Professor of Physics at Cardiff University, Wales. He is a fellow of the Optical Society of America, and recipient of the Dept of Energy, Basic Energy Science/Material Science Award and the Senior Scientist Award of the Alexander von Humboldt Foundation. Presently, he is serving as Associated Editor of IEEE Journal of Quantum Electronics.
 

 

04/18/2005 Summer Workshop:
CONSRT is planning to held a summer workshop on Optoelectronic Nanostructured Semiconducctor Technologies at Berkely, California during August 20, 21 and 23, 2005 to discuss technical progress and breakthroughs made in this area. Prospects for applications in the next generation photonics industries will also be explored.

 

03/18/2005 Announcement: Nobel lecture series by Prof. Zhores Alferov, starting on April 8, UC Berkeley      
Talk Title 1: Semiconductor Heterostructures - the Concept and History of Research
Dr. Zhores Alferov
Nobel Laureate of Physics Prize in 2000

Friday, April 8, 2005
Sibley Auditorium, Bechtle Engineering Building, UC Berkeley
4:00-5:00 p.m.
Registration required             Download the Flyer: Alvarov's Lecture

Talk Title 2:
History of Semiconductor Heterostructures
 
Monday, April 11, 3:00-4:00 p.m.                    
BOSS Seminar, Hogan Room, 521 Cory Hall
Talk Title 3:
Scientists of Ioffe Institute
  Friday, April 15, 11:00-12:00 a.m.                                                                                    CONSRT Seminar, Hogan Room, 521 Cory Hall
Talk Title 4:
Science in St. Petersburg-Past, Present and Future
 
Friday, April 15, 4:30-5:30 p.m., tea starts at 4 p.m.                                                           Physics Colloquium, 1 LeConte Hall
Abstract: A short history of the early investigations of semiconductor heterostructures from SeCd-Se photocells (1876) to the first single crystal lattice-matched heterojunctions GaAs-Ge (1959) is surveyed. The most fruitful idea for development of physics and applications of heterojunctions for different electronic components was the concept of Double Heterostructure (DHS) proposed by us at the beginning of 1963. Electron and optical confinement, super injection phenomena became new tools to control electron and light fluxes in crystals. Many new optoelectronic and electronic devices were created on the base of heterostructures. Of utmost importance was the making of room temperature cw lasers, efficient light emitting diodes and high-speed transistors.

Further development of the DHS concept on the basis of MBE and MOCVD technologies led to the discovery of quantum-size phenomena and to the creation of low-dimensional electron gas structures: Quantum Wells, Quantum Wires and Quantum Dots. Double heterostructures and supperlattices gave us new classes of materials - they were called by Leo Esaki as "Man made crystals" instead of usual materials that may be called as "God made crystals".

In the last part of the lecture new important results for nanostructures based on quantum dots, especially for QD lasers are presented.

 

01/15/2005 Young Engineers award:                                                                                        Go back to top
Professor Connie Chang-Hasnain has been selected to be one of four recipients of the Lillian M. Gilbreth Lectures by Young Engineers award this year. The award is given to the best speakers voted by attendees of the NAE Frontiers of Engineering meetings. Professor Chang-Hasnain will present her talk, "Progress and Prospects of Enabling Optoelectronic Devices for Broadband Communications" at the Gilbreth Lectures Symposium, Beckman Center in Irvine, CA on Feb. 10, 2005. The event is free and open to the public, but registration is required.             
01/15/2005 Honorary member of the A. F. Ioffe Institute:                                                            Go back to top
 

Professor Connie Chang-Hasnain has been elected as an honorary member of the A. F. Ioffe Institute in St. Petersburg. The Institute is one of the world's leading research organizations in basic and applied physics and has a total of 19 honorary members outside Russia.
http://www.ioffe.rssi.ru/       

 
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