High Power Solid-State Laser Science and Tech
at ORAU Workforce Solutions

Date Posted: 4/23/2019

Opportunity Description

High Power Solid-State Laser Science and Technologies Research is being pursued on enabling technologies for high power solid-state lasers to meet the needs of the Army and the other armed services. These lasers are more rugged and compact than gas lasers, but are much harder to scale to sufficiently high powers while maintaining good beam quality. We are investigating technologies for power scalable gain media in Near- and Mid-IR along with advanced thermal management, and beam quality improvement. These include ceramic gain media, which are as good as single crystals in most regards, but are mechanically stronger, inherently engineerable, and can be scaled to larger sizes, if needed. We are pursuing the use of these materials and others at cryogenic temperatures, where key thermal and spectroscopic properties are much improved over those at room temperature. We are particularly interested in laser operation at wavelengths near 1.6 microns in Er-doped solids, since this wavelength range offers much improved eye safety, and where recent advances in diodes laser pumps offer the potential for greatly improved efficiency and reduced thermal distortion. Also of interest are so called ‘low-phonon’ laser materials which have high potential for efficient laser operation in the 3-5 µm wavelength range. Other gain media of interest are fibers, which offer considerable beam quality and efficiency advantages, as well as better device integration, but require innovative designs to enable sufficient laser power scaling. We are also investigating special materials and laser architectures to promote heat removal from laser gain media and to further improve beam quality, beam correction and beam combining techniques based on stimulated light scattering (Brillouin and Raman). Our laboratories have a range of laser and spectroscopic tools for these studies. These include numerous types of diode lasers and diode arrays, including fiber-coupled ones, for efficient pumping of bulk laser materials and fibers, and a range of laser cavity designs to test materials and thermal management approaches. We also have a host of state of the art spectrometers for absorption, emission and Raman spectroscopy, cryostats for both laser and spectroscopic studies as a function of temperature and a setup for measuring materials thermal conductivity in a wide range of temperatures. References L. D. Merkle and M. Dubinskii, Opt. Express 25 (17), 19780 - 19794 (2017). M. Dubinskii, J. Zhang, V. Fromzel, Y. Chen, S. Yin, C. Luo, Opt. Express 26(4), 5092-5101 (2018). G. A. Newburgh, J. Zhang, and M. Dubinskii, Las. Phys. Lett. 14, 125101 (2017).

Opportunity Snapshot

  • Employee Type: Full-Time
  • Location: Adelphi, MD
  • Opportunity Type: Science
  • Experience: Not Specified
  • Date Posted: 4/23/2019

About Us

Grooming future leaders in science and technology requires enhancing the skills, knowledge and experience of workers early in their careers. To that end, ORAU (Oak Ridge Associated Universities) assists in connecting the best and most diverse students, recent graduates, faculty and professionals with world-class fellowships, internships and jobs, whether in national laboratories, research institutions, federal government offices or private sector R&D departments.

ORAU works with agencies such as the U.S. Army Research Laboratory (ARL) Research Associateship Program (RAP) allow Postdoctoral Fellows, Journeyman Fellows (undergraduate and graduates students and recent graduates), Senior Researchers, and Summer Faculty engage in research initiatives of their own choice, that are compatible with the interests of the government and will potentially contribute to the general effort of the ARL. We work with the Environmental Protection Agency (EPA) to place recent graduates in full-time and part-time jobs in the Office of Research and Development at EPA under the National Student Services Contract. ORAU also works with Center for Medicare and Medicaid Innovation.

Research opportunities include, but are not limited to the following disciplines: Aerospace Engineering, Anthropology, Archeology, Biology, Biochemistry, Biological Engineering, Biomechanical Engineering, Biomedical Engineering, Chemical Engineering, Chemistry, Computer Science, Computer Engineering, Data Science, Electrical Engineering, Environmental Health Risk Assessment, Environmental Science, Entomology, Epidemiology, Ergonomics, Geology, Health Education Mechanical Engineering, Materials Science, Mathematics, Nanotechnology, Photonics, Physics, Public Health Economics, Public Health Policy, Toxicology, and more.

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