The University of Arizona

College of Optical Sciences

 

Watt's Up

College of Optical Sciences News for January 29, 2009

 

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Today's Colloquium.  3:45 p.m.  Meinel 307

 

Ursula Keller, Institute of Quantum Electronics Physics Department, launches our Spring 2009 Colloquium series with Moving From VECSELs to MIXSELs: A New Class for Ultrafast Semiconductor Lasers.  Jerome Moloney is the host.  Abstract:  The optically pumped VECSEL [1] is a laser source that has sparked widespread interest in the past few years due to its capability of producing high average output powers in a diffraction-limited beam.  Furthermore, the semiconductor gain medium is well suited for being passively modelocked with a semiconductor saturable-absorber mirror (SESAM), and its large gain cross-section allows stable modelocking at multi-GHz repetition rates without Q-switching instabilities.  This VECSEL-SESAM modelocking approach allowed us to demonstrate very high average output powers [2]:  nearly transform-limited picosecond pulses with record-high output powers of 2.1 W at 4 GHz [3] and 1.4 W at 10 GHz [4].  We recently have successfully demonstrated the most application-relevant milestone with the integration of the saturable absorber with the gain structure:  we have integrated the saturable absorber into the same semiconductor wafer, optimized its performance for integration with quantum dots and demonstrated stable passive modelocking in a simple straight external cavity which allows for a fully monolithically wafer-integrated structure to reduce cost and improve ease of mass production.  We refer to this class of devices as the modelocked integrated external-cavity surface emitting laser (MIXSEL) [5].  So far with an optically pumped MIXSEL we have obtained 32-ps pulses at a wavelength of 957.3 nm and an average output power was 195 mW mainly limited by thermal issues because of the “right-side-up” structure.  MIXSELs would be ideally suited for many applications where the current ultrafast laser technology is considered to be too bulky and expensive.  This talk will give an overview of ultrafast VECSELs and MIXSELs.

References

[1] M. Kuznetsov, F. Hakimi, R. Sprague, A. Mooradian, IEEE Photon. Technol. Lett. 9, 1063, 1997

[2]  U. Keller, A. C. Tropper, Physics Reports 429, 67, 2006.

[3]  A.  Aschwanden, D. Lorenser, H. J. Unold, R.  Paschotta, E. Gini, and U. Keller, Opt. Lett. 30, 272, 2005.

[4]  A. Aschwanden, D. Lorenser, H. J. Unold, R. Paschotta, E. Gini, U. Keller, Appl. Phys. Lett. 86, 131102, 2005

[5] D. J. H. C. Maas, A.-R. Bellancourt, B. Rudin, M. Golling, H. J. Unold, T. Südmeyer, and U. Keller, "Vertical integration of ultrafast semiconductor lasers," Appl. Phys. B  88, 493 (2007).


 

Today's WIO Brown Bag Lunch with Ursula Keller

 

Everyone's welcome to attend.  The time is 11:45 a.m. to 12:15 p.m. in Meinel 821.  BTW:  WIO, Women in Optics, has quite a number of events scheduled for this semester, so keep an eye on the OSC calendar.  For more information or to receive news directly from the WIO listserv, please visit their web site at www.optics.arizona.edu 

 


 

Next Week's Colloquium.  3:45 p.m.  Meinel 307

 

Mark Kahan of Optical Research Associates is the scheduled speaker.

 


 

Accepting Nominations from OSC Faculty and Staff

2009 College of Optical Sciences Outstanding Graduate Student Award

 

This award recognizes graduate student excellence in the following areas:  academics, research, and social outreach activities.  Faculty and staff who would like to nominate a student for the award may see Gail Varin to pick up a nomination form.

 

Criteria:

  • Academics: The student goes above and beyond classroom expectation. He or she demonstrates exceptional knowledge and engages other students in discussions or projects.

  • Research: The student’s research is current and the student may be conducting independent research (thesis or dissertation).  The student attends workshops, conferences, and seminars to advance his or her knowledge.

  • Social Outreach: The student actively participates in events sponsored by the College of Optical Sciences or the University of Arizona.  The student is actively involved in an organization(s) or program(s).  Programs may include social events, speaker events, conferences and workshops.

Eligibility Requirements:

  • Be an admitted MS or PhD full-time on campus graduate student

  • Have an overall GPA of at least 3.8

  • Have completed 2/3 of his/her academic program requirements and submitted an official Plan of Study; doctoral nominees should have completed the comprehensive exam

  • Demonstrated academic excellence including evidence of research with includes but is not limited to publications and presentations

  • Demonstrate leadership and or service including outreach activities

An award ceremony will be scheduled in March. The recipient will receive a framed certificate and a cash prize. 

 


 

Do You Need to Take Calculus This Semester?

 

Pima Community College offers quite a number of late-start classes this semester, including Calculus I at their East Campus location.  The course begins on February 2 so there is still time to sign up.  It's MAT 220, CRN# 25442, and is taught on Tuesdays and Thursdays from 11:40 a.m. to 2:20 p.m.  (Note: We hear that it uses the same textbook that UA uses, but have not verified the info.)  To sign up, or check on Pima's other late-start classes, please visit www.pima.edu

 

Watts Happening

 

Happy Birthday and Best Wishes for a Wonderful Year

 

February 2

Dennis Goldstein (dgoldstein@optics.arizona.edu)

Timothy Renkoski (trenkoski@optics.arizona.edu)

 

February 3

Ravi Pant (rpant@optics.arizona.edu)

Jeffrey Scogin (jbs3@email.arizona.edu)

 

February 4

Michael Descour (michael.descour@optics.arizona.edu)

William Molina (molina@email.arizona.edu)

 

February 5

Galina Khitrova (galina@optics.arizona.edu)

Scott Newman (snewman@email.arizona.edu)

 

February 6

Tom Casavant (tom.a.casavant@lmco.com)

John Sullivan (jsullivan@optics.arizona.edu)

 

February 7

Roger Angel (rangel@as.arizona.edu)

 


 

OSC Calendar

 

January 30

Retirement Celebration for Pat Gransie.  3:15 p.m.  Meinel 821.

 

January 30

OSC Sports Friday.  5:30 p.m.  Location is TBD.

 

February 5

OSC Colloquium.  3:45 p.m.  Meinel 307.

 


 

On Campus

 

January 29

AME Seminar.  4:00 p.m.  AME Lecture Hall Room S212.  Peter H. Smith, Senior Research Scientist, UA Lunar and Planetary Laboratory, will present Peter Smith and the Journey of the Phoenix.

 

January 30

Physics Colloquium.  2:15 p.m. PAS 224.  Graduate student to be announced.  3:00 p.m.  PAS 224.  Dr. Michael Chandross, Sandia National Laboratories, will present Molecular Simulations of Lubrication and Damage in Self-Assembled Monolayers.

 

February 4

Mathematical Physics Seminar.  1:00 p.m.  Math 402.  John Palmer, UA Department of Mathematics, will present Planar Ising Correlations II.

 

February 9

ECE Distinguished Speaker Seminar.  3:00 p.m.  Student Union, Presidio Room.  David G. Stork, Chief Scientist, Ricoh Innovations, will present Overthrowing Some Old Optical Principles in the New World of Computational Imaging.

 

Employment

 

Postdoc.  University of Connecticut.  A postdoctoral position is available in the area of optical interferometric techniques in Experimental Mechanics. If you are interested, please send your CV and three references, to gelyko@engr.uconn.edu  George Lykotrafitis, Assistant Professor, Department of Mechanical Engineering, University of Connecticut.

 


 

Optics Engineer.  PowerVision Inc.  Qualifications:  3-5 years of industry experience in ophthalmic or medical optics.  Experience with a optical measurement instrumentation (interferometer, focal length bench, etc).  Proficient in Zemax  or other optical design software.  Experience in medical devices a plus.  Good communication and presentation skills.  Must be comfortable in a team-oriented, fast-paced, innovative work environment.  Strong problem-solving skills.  Education:  BS in Optics, Physics.  Role:  Work with scientists, engineers and technicians to develop and test a novel intra-ocular lens.  Develop test instrumentation and procedures for design verification and process monitoring.  Analyze lens design and process changes, and present data to project team.  Write test protocols and test reports to demonstrate compliance with regulatory standards.   Contact:  Matthew A. Frinzi, Founder & Chief Business Officer, PowerVision Inc.  298 Harbor Boulevard, Belmont CA 94002.  650-620-9948 x11 (Work).  650-620-4607 (Fax).  415-613-8946 (Mobile).  mfrinzi@powervisionlens.com

 


 

Optical Product Engineer, AdValue Photonics Inc.  Tucson, Arizona.  AdValue Photonics develops and manufactures fiber lasers, fiber amplifiers and other fiber based components. AdValue Photonics, a fast growing, dynamic, privately owned small business, is looking for candidates to fill two optical product engineer positions.  Requirements:  - Degree in Optical, Applied Physics, or Electrical Engineering.  Two years experiences in fiber lasers and amplifiers.  Self-motivated, and able to work both independently and in a team environment.  Demonstrated analytical, experimental, and problem solving skills.  Strong communication and technical writing skills.  Customer oriented.  U.S Citizenship or Permanent Resident status.  We offer an excellent compensation package.  For more information about the company, please visit our website at www.advaluephotonics.com. Qualified candidates, please email resume to HumanResource@advaluephotonics.com

 


 

Optical Design Engineer.   Aerotek.  Who: Leading Edge Non-Imaging Diffractive Optics Company.  Where: Upstate/Western NY State.  Contact: Joe Murray, (585)350-2742 OR JoMurray@aerotek.com  $80,000 - $100,000/year, 1+ year of experience.  Purpose of Position:  Provide optical design and engineering to the system of development engineering team.  Design, document and prototype optical parts, assemblies and systems, including customer and company products.   Use Optical design software (Zemax or equivalent) and LightTools.  Requirements:  M.S. or Ph.D. in Optics.  Two years experience or demonstrated proficiency in an optical design software.  Good communication skills.  ISO9000 or other Quality Control systems experience useful.  Ongoing Responsibilities:  Create, design, specify optical components and systems as required meeting needs of customer products, internal company projects and/or process work centers.  Perform analysis of design to model optical performance.  May include working with engineering staff to create formal dimensioned and toleranced drawings, specifications and bills of materials, in accordance with company documentation standards.  May work with others to qualify suppliers and procure custom and standard parts, materials and components in accordance with company purchasing policies.  Secure IP and stay current with technologies in the field.  Key Decision Areas:  Tradeoffs to meet budgets and customer requirements.  Tradeoffs to meet schedule and quality.  Optical performance vs. cost/ease of fabrication.

 


 

Optical Engineer.  Nanometrics.  Nanometrics is looking for an Optical Engineer to join our growing team of engineers and scientists.   BS, MS, or PhD in Optics is required.  Excellent oral and written communication skills are required.  Nanometrics designs and manufactures a wide range of metrology systems based on optical techniques including reflectometry, ellipsometry, photoluminescence, FTIR, and interferometry. Our tools are used by the world’s largest Semiconductor, LED, and solar companies to characterize sub-wavelength grating structures, complicated thin film stacks, doping, and other physical properties. The candidate will contribute to all phases of the product life cycle from concept, to prototyping, and new product introduction.  The ideal candidate will have a good understanding of aberrations, diffraction, polarization, and interferometry. She or he will also have good laboratory skills, including optical alignment, breadboarding, and troubleshooting. Experience with Zemax or another design program is required.   Nanometrics headquarters are in Milpitas, California (Silicon Valley) with offices worldwide.  Contact Richard Yarussi, ryarussi@nanometrics.com

 


 

Agency Listing.  Senior Quality Engineer.  Location:  West Coast.  Position:  The Sr. Quality Engineer understands and applies the principles of product and service quality evaluation and control. This body of knowledge and applied technologies include, but are not limited to: Probability, Statistical Quality Control and Design of Experiments; Metrology, Inspection and Test; Audit of Quality Systems for deficiency identification and correction; Human factors and motivation; and Quality Information Systems.  The Sr. Quality Engineer has the responsibility for the action required to:  Assist the Quality Assurance Manager with development and operation of Quality Systems.  Review proposed contracts, products and processes to avoid or eliminate unnecessary quality difficulties.  Plan the quality measurements and controls on materials, processes, and product that provides adequate control of quality at minimum quality related costs.  Determine that manufacturing processes have sufficient capability to meet quality requirements.  Analyze quality information and feed back analyses and recommendations for adjustment to product design, manufacturing processes, equipment, and the quality system.  Provide leadership in the application of statistical methods to diagnose and correct improper quality practices, workmanship and process problems.  On behalf of the Quality Assurance Manager, carry out essential steps in establishing and maintaining the company quality system.  Job Requirements:  Education: Completed Bachelor of Science Degree in Quality Technology, Engineering, Mathematics, the Basic Sciences or related fields.  Experience: Seven years of experience in one or more branches of Quality Assurance.  Special Abilities and Complexity of Duties:  Strong skills in inspection, writing, interpersonal communications.  Knowledge of Quality Assurance, Engineering, and Statistical Methods.  Good interpersonal skills and ability to work with challenging customers and suppliers.  Skilled with interferometers, spectrophotometers, calipers, micrometers, Coordinate Measurement Machines, lasers and electronic test equipment.  American Society for Quality certification as a Quality Engineer preferred.  Email resume and brief summary of relevant experience to Rick Corey, OpticsProfessionals LLC:  rcorey@opticsprofessionals.com

 


 

Agency Listing.  Manufacturing Engineer.  Location:   West Coast.  Position:  Develop and implement new manufacturing processes, tooling, and testing for optical fabrication and assembly.  Identify process variables and the means of controlling the processes to have acceptable quality and cycle times. Preferred skills include optical fabrication, assembly and test. Fabrication includes grinding, pitch polishing, pad polishing, MRF, CP operation, edging, and shaping of optical components. Assembly includes alignment using both mechanical means (fixtures, physical measurement of edge location) and optical (alignment telescopes, autocollimators, computerized alignment stations). Test includes interferometeric characterization of single and multiple surfaces, MTF, stray light, focal length, magnification, and other important characteristics of optical materials, components and systems.  Requirements:  3-5 years manufacturing engineering experience. Experience with optical fabrication highly preferred.  BS degree in Engineering or related discipline (preferably ME, IE or OE), or substantial experience working as a manufacturing engineer in an optics fabrication environment.  Special Abilities:  Strong verbal and written technical communication skills.  Computer skills in word processing and spreadsheet software including MS Word, Excel, Access; CAD software knowledge required (Solidworks preferred).  Strong analytical, fault isolation, and problem solving skills.  Strong organization skills and attention to details required.  Must be capable of reading blueprints.  Experience in machining and conventional optical fabrication technologies (grinding, polishing, coating, testing) is highly preferred.  Experience in process design, development and project planning is desired.  Experience in preparing and maintaining drawings, procedures, process routers and Bills of Materials with full documentation and configuration control required.  Must understand production flow and be capable of logically developing planning within this flow that correctly and efficiently builds product.  Demonstrated abilities in developing and executing Statistical Process Control for Manufacturing is required.  Email resume and brief summary of relevant experience to Rick Corey, Optics Professionals LLC: rcorey@opticsprofessionals.com

 

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Cathy Alexander

Information Specialist Coordinator

College of Optical Sciences, University of Arizona

cathy.alexander@optics.arizona