Dr. Seth D. Melgaard Profile

Dr. Seth D. Melgaard

at Sandia National Labs

Area of Expertise:

Optical refrigeration , laser cooling of solids , spectroscopy , differential luminescence thermometry

Publications (20)

Proceedings Article | 17 March 2023 Presentation

Demonstration of diode-pumped optical refrigeration to cryogenic temperature

Alexander Albrecht, Jackson Kock, Seth Melgaard, Richard Epstein, Mansoor Sheik-Bahae

Proceedings Volume PC12437, PC1243708 (2023) https://doi.org/10.1117/12.2652259

KEYWORDS: Cryogenics, Laser crystals, Crystals, Semiconductor lasers, High power fiber lasers, Fiber coupled lasers, Diodes, Dielectric mirrors, Absorption

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Proceedings Article | 7 March 2016 Paper

Optical refrigeration of Tm:YLF and Ho:YLF crystals

Saeid Rostami, Alexander Albercht, Mohammad Ghasemkhani, Seth Melgaard, Aram Gragossian, Mauro Tonelli, Mansoor Sheik-Bahae

Proceedings Volume 9765, 97650P (2016) https://doi.org/10.1117/12.2213568

KEYWORDS: Crystals, Optical parametric oscillators, Laser crystals, High power lasers, Solids, Luminescence, Ions, Continuous wave operation, Tunable lasers, Absorption, Fluorescence spectroscopy, Lanthanides, Optical cooling, Optical spectroscopy, Thermal imaging cameras, Thulium, Mirrors, Holmium, Temperature metrology

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Proceedings Article | 1 September 2015 Paper

Radiation effects on Yb:YLF crystals used in cryogenic optical refrigerators

K. Martin, S. Melgaard, V. Cowan, J. Hubbs, T. Fraser, M. Sheik-Bahae

Proceedings Volume 9616, 96160V (2015) https://doi.org/10.1117/12.2189843

KEYWORDS: Crystals, Ions, Cryogenics, Silicon, Absorption, Photons, Laser crystals, Solids, Neodymium, Sensors

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Proceedings Article | 10 March 2015 Paper

High sensitivity background absorption measurements in semiconductors

Nathan Giannini, Junior Silva, Chengao Wang, Alexander Albrecht, Seth Melgaard, Mansoor Sheik-Bahae

Proceedings Volume 9380, 93800F (2015) https://doi.org/10.1117/12.2080087

KEYWORDS: Absorption, External quantum efficiency, Gallium arsenide, Calibration, Zinc, Semiconductors, Interfaces, Indium gallium phosphide, Absorbance, Neodymium

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Proceedings Article | 10 March 2015 Paper

Intracavity-enhanced optical refrigeration of Yb:YLF crystal to cryogenic temperatures

Mohammadreza Ghasemkhani, Alexander Albrecht, Seth Melgaard, Denis Seletskiy, Jeffrey Cedeberg, Mansoor Sheik-Bahae

Proceedings Volume 9380, 938003 (2015) https://doi.org/10.1117/12.2080343

KEYWORDS: Absorption, Crystals, Fabry–Perot interferometers, Luminescence, Mirrors, Reflectivity, Solids, Laser crystals, Ions, Cryogenics

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Proceedings Article | 24 June 2014 Paper

Optical cryocoolers for sensors and electronics

Richard Epstein, Markus Hehlen, Mansoor Sheik-Bahae, Seth Melgaard

Proceedings Volume 9070, 90702K (2014) https://doi.org/10.1117/12.2052941

KEYWORDS: Crystals, Laser crystals, Solids, Ions, Cryocoolers, Absorption, Glasses, Phonons, Luminescence, Quantum efficiency

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Proceedings Article | 19 February 2014 Paper

Intracavity optical refrigeration to 131K using high-power vertical external-cavity surface-emitting lasers (VECSELs)

Mohammadreza Ghasemkhani, Alexander Albrecht, Seth Melgaard, Denis Seletskiy, Jeffrey Cedeberg, Mansoor Sheik-Bahae

Proceedings Volume 9000, 900005 (2014) https://doi.org/10.1117/12.2040116

KEYWORDS: Absorption, Crystals, High power lasers, Luminescence, Laser crystals, Optical filters, Photons, Ions, External quantum efficiency, Temperature metrology

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Proceedings Article | 19 February 2014 Paper

Device applications of cryogenic optical refrigeration

Seth Melgaard, Denis Seletskiy, Richard Epstein, Jay Alden, Mansoor Sheik-Bahae

Proceedings Volume 9000, 900002 (2014) https://doi.org/10.1117/12.2039956

KEYWORDS: Crystals, Luminescence, Cryogenics, Thermography, Absorption, Solids, Sapphire, Interfaces, Laser crystals, Mirrors

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Proceedings Article | 19 February 2014 Paper

Preparation of high-purity LiF, YF3, and YbF3 for laser refrigeration

Markus Hehlen, William Boncher, Seth Melgaard, Michael Blair, Robert Jackson, Thomas Littleford, Steven Love

Proceedings Volume 9000, 900004 (2014) https://doi.org/10.1117/12.2039547

KEYWORDS: Ions, Crystals, Iron, Absorption, Metals, Lithium, Fluorine, Ytterbium, Laser induced fluorescence, Laser crystals

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Proceedings Article | 11 March 2013 Paper

Progress towards cryogenic temperatures in intra-cavity optical refrigeration using a VECSEL

Alexander Albrecht, Mohammadreza Ghasemkhani, Jeffrey Cederberg, Denis Seletskiy, Seth Melgaard, Mansoor Sheik-Bahae

Proceedings Volume 8638, 863805 (2013) https://doi.org/10.1117/12.2005098

KEYWORDS: Crystals, Laser crystals, Luminescence, Cryogenics, Optical filters, Absorption, Laser optics, Semiconductor lasers, Physics, High power lasers

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Proceedings Article | 11 March 2013 Paper

Optical refrigeration progress: cooling below NIST cryogenic temperature of 123K

Seth Melgaard, Denis Seletskiy, Alberto Di Lieto, Mauro Tonelli, Mansoor Sheik-Bahae

Proceedings Volume 8638, 863804 (2013) https://doi.org/10.1117/12.2005281

KEYWORDS: Crystals, Absorption, Cryogenics, Luminescence, Doping, External quantum efficiency, Astronomical imaging, Photonic crystals, Quantum efficiency, Laser crystals

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Proceedings Article | 26 February 2013 Paper

Intracavity-enhanced laser cooling of solids using high power VECSELs at 1020 nm

Mansoor Sheik-Bahae, Mohammad Ghasemkhani, Alexander Albrecht, Denis Seletskiy, Jeffrey Cederberg, Seth Melgaard

Proceedings Volume 8606, 86060A (2013) https://doi.org/10.1117/12.2003561

KEYWORDS: Crystals, Absorption, Luminescence, Solids, Laser crystals, High power lasers, Cryocoolers, Temperature metrology, Cryogenics, External quantum efficiency

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Proceedings Article | 8 February 2012 Paper

Novel photon blockade schemes for thermal link applications

Seth Melgaard, Juanita Trevino, Denis Seletskiy, Mansoor Sheik-Bahae

Proceedings Volume 8275, 82750I (2012) https://doi.org/10.1117/12.912437

KEYWORDS: Luminescence, Crystals, Mirrors, Absorption, Scattering, Reflectivity, Thermal modeling, Dielectrics, Thermography, Sensors

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Proceedings Article | 8 February 2012 Paper

Thermal imaging with high spatial and temperature resolution

Denis Seletskiy, Seth Melgaard, Mansoor Sheik-Bahae

Proceedings Volume 8275, 82750H (2012) https://doi.org/10.1117/12.910271

KEYWORDS: Thermography, Spatial resolution, Temperature metrology, Image resolution, Semiconductors, Laser beam diagnostics, Gallium arsenide, Spectroscopy, Metrology, Black bodies

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Proceedings Article | 8 February 2012 Paper

High sensitivity spectroscopic and thermal characterization of cooling efficiency for optical refrigeration materials

Seth Melgaard, Denis Seletskiy, Alberto Di Lieto, Mauro Tonelli, Mansoor Sheik-Bahae

Proceedings Volume 8275, 827504 (2012) https://doi.org/10.1117/12.910202

KEYWORDS: Crystals, Cryogenics, Luminescence, Absorption, Spectroscopy, Temperature metrology, Thermography, Laser crystals, Ions, Quantum efficiency

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Proceedings Article | 8 February 2011 Paper

Experimental evidence for laser cooling of Yb:YLF to 120 Kelvin

Seth Melgaard, Denis Seletskiy, Alberto Di Lieto, Mauro Tonelli, Mansoor Sheik-Bahae

Proceedings Volume 7951, 795105 (2011) https://doi.org/10.1117/12.878933

KEYWORDS: Crystals, Absorption, Temperature metrology, Cryogenics, Luminescence, Spectroscopy, Energy efficiency, Gallium arsenide, External quantum efficiency, Laser crystals

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Proceedings Article | 18 February 2010 Paper

Spectroscopy of Yb-doped YLF crystals for laser cooling

S. Melgaard, D. Seletskiy, M. Sheik-Bahae, S. Bigotta, A. Di Lieto, M. Tonelli, R. Epstein

Proceedings Volume 7614, 761407 (2010) https://doi.org/10.1117/12.845045

KEYWORDS: Crystals, Absorption, Laser crystals, Luminescence, Gallium arsenide, Spectroscopy, Temperature metrology, Laser applications, Liquid crystals, Ytterbium

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Proceedings Article | 18 February 2010 Paper

Optical refrigeration breaks the Peltier barrier: cooling Yb:YLF to 155K

Denis Seletskiy, Seth Melgaard, Mansoor Sheik-Bahae, Stefano Bigotta, Alberto DiLieto, Mauro Tonelli, Richard Epstein

Proceedings Volume 7614, 761403 (2010) https://doi.org/10.1117/12.845049

KEYWORDS: Absorption, Crystals, Solids, Luminescence, Ytterbium, Cryogenics, Spectroscopy, Glasses, Cryocoolers, Energy efficiency

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Proceedings Article | 18 February 2010 Paper

Laser cooling of a semiconductor load using a Yb:YLF optical refrigerator

Denis Seletskiy, Seth Melgaard, Mansoor Sheik-Bahae, Stefano Bigotta, Alberto DiLieto, Mauro Tonelli

Proceedings Volume 7614, 761409 (2010) https://doi.org/10.1117/12.845051

KEYWORDS: Crystals, Gallium arsenide, Absorption, Luminescence, Semiconductor lasers, Semiconductors, Laser crystals, Solids, Glasses, Heterojunctions

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Proceedings Article | 10 February 2009 Paper

Recent progress in laser cooling via resonant cavity

Denis Seletskiy, Seth Melgaard, Michael Hasselbeck, Mansoor Sheik-Bahae, Richard Epstein, Stefano Bigotta, Mauro Tonelli

Proceedings Volume 7228, 72280F (2009) https://doi.org/10.1117/12.810861

KEYWORDS: Absorption, Temperature metrology, Solids, Crystals, Mirrors, Cryocoolers, Statistical analysis, Absorbance, Reflectivity, Quantum efficiency

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Showing 5 of 20 publications

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