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TODAY - SEMINAR / 11.29.11 / CREOL 102 / 11-12pm / Seminar: “Laser-induced breakdown spectroscopy for online elemental analysis”, P. Mauchien, J.-B. S

Seminar: “Laser-induced breakdown spectroscopy for online elemental analysis”, P. Mauchien, J.-B. Sirven, J.-L. Lacour, G. Moutiers

CREOL 102

Tuesday, November 29, 2011 / 11-12pm

P. Mauchien, J.-B. Sirven, J.-L. Lacour, G. Moutiers

CEA, Nuclear Energy Division, Department of Physical Chemistry

Abstract

The laser-induced breakdown spectroscopy (LIBS) technique has substantial interests for elemental analysis of materials in hostile environments. It is relatively simple to implement in various configurations, it does not require any sample preparation, it is fast and above all, it can be used at remote distance. For these reasons the French Atomic Energy Commission (CEA) has been working on LIBS for two decades, initially for the nuclear sector, and now on different applications which necessitate in situ or online measurements.

In the first part of the seminar, we will give an overview of LIBS activities at CEA, especially on nuclear and micro-LIBS applications. In the second part we will focus on particular research topics of our department. We will present our work on i) in situ analysis of liquid sodium purity to improve the safety of fast nuclear reactors, ii) application of LIBS to nanoparticles measurements for online process control and nano-safety purposes, iii) remote LIBS for qualitative and quantitative analysis of Martian rocks (ChemCam project).

For more information:

Dr. Matthieu Baudelet

Senior Research Scientist

Townes Laser Institute, CREOL, UCF

Phone: 407-823-6910

Seminar: 12.15.11 / CREOL 102 / 11-12pm / “Recent Advances In Transparent Ceramics”, Hideki Yagi

Seminar: “Recent Advances In Transparent Ceramics”, Hideki Yagi

CREOL 102

Thursday, December 15, 2011 / 11:00-12:00pm

Hideki Yagi

Konoshima Corp, Japan

Abstract:

Transparent optical ceramics were invented in the U.S in the 1960’s. At that time, the optical quality of ceramics was lower than other optical materials. These ceramics were called translucent ceramics and have been now used for lighting applications for a long time. However in principle, ceramics have several advantages compared with single-crystals and optical glass if their optical quality can be improved. In the past decade many researchers have been working toward the development of highly transparent ceramics. Nowadays many transparent ceramics with high quality have been developed, and are used for many applications, such as lasers, scintillators ,windows and transparent armor.

Dr Yagi is internationally known as an expert in this field and since the early 1990’s has been developing several different transparent ceramics (YAG, LuAG, sesquioxides..) for photonic applications. In this seminar he will summarize the many different aspects of the fabrication, physical and optical properties of transparent ceramics.

For More Information:

Dr. Matthieu Baudelet

Senior Research Scientist

Townes Laser Institute, CREOL, UCF

Phone: 407-823-6910

Seminar: 12.9.11 / CREOL 102 / 11-12pm / “Recent Results from both High Power and Broadly Tunable External Cavity Quantum Cascade Lasers”, Timothy Day

Seminar: “Recent Results from both High Power and Broadly Tunable External Cavity Quantum Cascade Lasers”, Timothy Day

CREOL 102

Friday, December 9, 2011 / 11:00am-12:00pm

Dr. Timothy Day

Chairman, CEO/CTO, Co-Founder of Daylight Solutions

Abstract:

Broad tunability in the mid-IR (~3-12 μm) is desirable for a number of applications. Daylight Solutions has built a number of External Cavity quantum cascade Lasers (ECqcL™) that maximize tuning range from the quantum cascade chip. As much as 525 cm-1 of pulsed and 121 cm-1 of cw, mode hop-free tuning has been obtained. Various mechanisms for the broadening of the gain of the QC chip are considered. High Power QCLs are also a major area of development producing platforms with up to 15 Watts optical output in the MWIR range.

Biography:

Dr. Timothy Day is a cofounder of Daylight Solutions and serves as the CEO and CTO for the company. Daylight Solutions is an advanced manufacturer of molecular detection and imaging products, serving markets that include Industrial Process Control, Medical Diagnostics and Defense and Security using Mid IR lasers and sensor systems. Dr. Day concurrently serves as the executive manager for Daylight Defense, LLC, a wholly owned subsidiary of Daylight Solutions, established to serve the Defense and Security markets. While at Daylight Defense, he and his team have introduced several EO/IR products that serve the U.S. military in areas such as directed infrared countermeasures, stand-off detection of explosives, laser aiming/designating, combat ID, free-space secure communications and other applications. Dr. Day has over 20 years' experience in both technical and business management in the photonics industry. He has led engineering, research, product development, manufacturing, and marketing operations. He started his career as a cofounder of New Focus, where he served from 1990 through 2004. During his time at New Focus, he was involved in all aspects of the company’s history, concluding with his work on the sale of the company to Bookham Technology PLC for $338M. While at New Focus he also contributed to the raising of over $500M though public and private equity offerings. From 1990 to 2009, while at New Focus and Daylight Solutions, Dr. Day has developed extensive patent and product portfolios and transferred numerous products into production, both onshore and overseas.

Dr. Day holds both a BS and an MS in Physics from San Diego State University and a PhD in Electrical Engineering from Stanford University.

For More Information:

Dr. Matthieu Baudelet

Senior Research Scientist

Townes Laser Institute, CREOL, UCF

Phone: 407-823-6910

Seminar: 12.7.11 / CREOL A214 / 11-12pm / Seminar: “Making Use Of Molecular Bands In LIBS Spectra In Recent Applications At NILES, Cairo University”,

Seminar: “Making Use Of Molecular Bands In LIBS Spectra In Recent Applications At NILES, Cairo University”, Mohamed Abdel Harith

CREOL A214

Wednesday, December 7, 2011 / 11-12pm

Mohamed Abdel Harith

Abstract:

Two recent research works conducted by the applied laser spectroscopy group (ALS) at NILES will be presented. Though the two works are in two different fields (one is an industrial application while the other is in Cultural heritage) but in both we have made use of the molecular bands in the obtained LIBS spectra.

The first work it has been focused on studying evolution of the cyanide (CN) and carbon (C₂) molecular spectral emission lines in the laser induced breakdown spectra of lubricating oil as a function of its consumption. The intensities of these molecular bands have been taken as indicator of engine oil degradation at certain mileage. The results proved that it is possible to have a direct, straightforward and easy method for prediction of lubricating oil degree of consumption. This may facilitate scheduling the proper time and/or mileage intervals for changing the oil to avoid any possibility of engine failure.

In the second work human calcified tissue samples of recent and archeological bones have been studied via the LIBS technique. The old samples were from three different ancient Egyptian dynasties. Elements normally used to study dietary habits (Sr, Ba, Al, and Pb) were analyzed and the interferences of postmortem or diagenic effects due to the burial place were investigated via LIBS analysis of soil samples taken from the same locations where the archeological bones have been buried. Study of CN and C₂ molecular bands in the obtained LIBS spectra of the bones revealed that these bands have strong intensities in recent bones spectra contrary to the archaeological ones. This is attributed to the degradation of the tissues and has been confirmed by following up calcium to phosphorus ratios in different bone samples.

For More Information:

Dr. Matthieu Baudelet

Senior Research Scientist

Townes Laser Institute, CREOL, UCF

Phone: 407-823-6910

SEMINAR / 11.29.11 / CREOL 102 / 11-12pm / Seminar: “Laser-induced breakdown spectroscopy for online elemental analysis”, P. Mauchien, J.-B. Sirven, J

Seminar: “Laser-induced breakdown spectroscopy for online elemental analysis”, P. Mauchien, J.-B. Sirven, J.-L. Lacour, G. Moutiers

CREOL 102

Tuesday, November 29, 2011 / 11-12pm

P. Mauchien, J.-B. Sirven, J.-L. Lacour, G. Moutiers

CEA, Nuclear Energy Division, Department of Physical Chemistry

Abstract

The laser-induced breakdown spectroscopy (LIBS) technique has substantial interests for elemental analysis of materials in hostile environments. It is relatively simple to implement in various configurations, it does not require any sample preparation, it is fast and above all, it can be used at remote distance. For these reasons the French Atomic Energy Commission (CEA) has been working on LIBS for two decades, initially for the nuclear sector, and now on different applications which necessitate in situ or online measurements.

In the first part of the seminar, we will give an overview of LIBS activities at CEA, especially on nuclear and micro-LIBS applications. In the second part we will focus on particular research topics of our department. We will present our work on i) in situ analysis of liquid sodium purity to improve the safety of fast nuclear reactors, ii) application of LIBS to nanoparticles measurements for online process control and nano-safety purposes, iii) remote LIBS for qualitative and quantitative analysis of Martian rocks (ChemCam project).

For more information:

Dr. Matthieu Baudelet

Senior Research Scientist

Townes Laser Institute, CREOL, UCF

Phone: 407-823-6910