Dr. Markus P. Hehlen Profile

Dr. Markus P. Hehlen

Research Scientist at Los Alamos National Lab

SPIE Involvement:

Author | Editor

Publications (31)

Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

The mini astrophysical MeV background observatory (MAMBO) CubeSat mission for gamma-ray astronomy

Peter Bloser, W. Thomas Vestrand, Markus Hehlen, Kimberly Katko, Lucas Parker, Darrel Beckman, James Sedillo, Justin McGlown, John Michel, Rory Scobie, Anthony Nelson, Daniel Poulson, Tyler Roth, Christopher Fryer, Aimee Hungerford, Matthew Mumpower, Melissa Rasmussen, Samalka Anandagoda, Dieter Hartmann, Marco Ajello

Proceedings Volume 12678, 1267812 (2023) https://doi.org/10.1117/12.2676410

KEYWORDS: Silicon photomultipliers, Equipment, Gamma radiation, Space operations, Scintillators, Simulations, Sensors, Field programmable gate arrays, Calibration, Plastics

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Proceedings Article | 4 October 2022 Presentation + Paper

Presentation + Paper

Performance assessment of a compact neutron detector module based on scintillating composites

Cameron Richards, Brenden Wiggins, Metodi Iliev, Andrea Favalli, Thomas McLean, Alexander Gomez, Markus Hehlen

Proceedings Volume 12241, 122410A (2022) https://doi.org/10.1117/12.2632795

KEYWORDS: Composites, Sensors, Scintillation, Photons, Particles, Adhesives, Scintillators, Ray tracing, Californium, Reflectors, Nuclear radiation detection

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Proceedings Article | 31 August 2022 Presentation + Paper

Presentation + Paper

The Mini Astrophysical MeV Background Observatory (MAMBO) CubeSat mission for gamma-ray astronomy

Peter Bloser, W. Thomas Vestrand, Markus Hehlen, Kimberly Katko, Lucas Parker, Darrel Beckman, James Sedillo, Justin McGlown, John Michel, Rory Scobie, Anthony Nelson, Tyler Roth, Daniel Poulson

Proceedings Volume 12181, 121812L (2022) https://doi.org/10.1117/12.2629069

KEYWORDS: Sensors, Gamma radiation, Space operations, Electronics, Scintillators, Observatories, Instrument modeling, Gamma-ray astronomy, Device simulation, Calibration

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Proceedings Article | 18 April 2022 Presentation + Paper

Presentation + Paper

Developments in Gd2O2S based pixelated-metallic aperture arrays

Brenden Wiggins, Cameron Richards, Don Johnson, Oliver Humbach, James Hunter, Markus Hehlen

Proceedings Volume 12047, 120470B (2022) https://doi.org/10.1117/12.2612719

KEYWORDS: Composites, X-rays, Nickel, Silver, Scintillation, X-ray imaging, Gadolinium, Reflectivity, Scintillators, Prototyping

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Proceedings Article | 24 August 2021 Presentation + Paper

Presentation + Paper

The Mini Astrophysical MeV Background Observatory (MAMBO) CubeSat mission

Peter Bloser, W. Thomas Vestrand, Markus Hehlen, Lucas Parker, Darrel Beckman, Justin McGlown, Lee Holguin, Kimberly Katko, James Sedillo, Anthony Nelson, Gregory Lee

Proceedings Volume 11821, 118210I (2021) https://doi.org/10.1117/12.2594046

KEYWORDS: Sensors, Gamma radiation, Space operations, Scintillators, Observatories, Monte Carlo methods, Calibration, Signal detection

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Proceedings Article | 2 August 2021 Presentation + Paper

Presentation + Paper

The NACHOS CubeSat-based hyperspectral imager: laboratory and field performance characterization

Kirk Post, Logan Ott, Magdalena Dale, Claira Safi, Kerry Boyd, Hannah Mohr, James Theiler, Bernard Foy, Markus Hehlen, Christian Ward, Michael Caffrey, C. Glen Peterson, Ryan Hemphill, Manvendra Dubey, Steven Love

Proceedings Volume 11832, 118320F (2021) https://doi.org/10.1117/12.2594686

KEYWORDS: Hyperspectral imaging, Spatial resolution, Satellites, Imaging systems, Earth sciences

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Proceedings Article | 2 August 2021 Presentation + Paper

Presentation + Paper

NACHOS, a CubeSat-based high-resolution UV-Visible hyperspectral imager for remote sensing of trace gases: system overview and science objectives

Steven Love, Logan Ott, Kirk Post, Magdalena Dale, Claira Safi, Kerry Boyd, Hannah Mohr, Christian Ward, Michael Caffrey, James Theiler, Bernard Foy, Markus Hehlen, Charles Glen Peterson, Ryan Hemphill, James Wren, Arthur Guthrie, David Graff, Nicholas Dallmann, Paul Stein, Manvendra Dubey

Proceedings Volume 11832, 118320E (2021) https://doi.org/10.1117/12.2594336

KEYWORDS: Satellites, Charge-coupled devices, Hyperspectral imaging, Imaging systems, Gases, Mirrors, Spatial resolution, Diffraction gratings, Spectroscopy, Calibration, Passive remote sensing, Optical gas detection

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Proceedings Article | 5 March 2021 Presentation

Presentation

Bridgman growth of LLF:Yb single-crystals for laser cooling and radiation-balanced lasers

Azzurra Volpi, Jackson Kock, Alexander Albrecht, Mansoor Sheik-Bahae, Markus Hehlen

Proceedings Volume 11702, 117020Q (2021) https://doi.org/10.1117/12.2582835

KEYWORDS: Crystals, Optical spectroscopy

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Proceedings Article | 5 March 2021 Presentation + Paper

Presentation + Paper

Mode scaling in radiation balanced disk lasers for various gain materials

Azzurra Volpi, Jackson Kock, Alexander Albrecht, Saeid Rostami, Markus Hehlen, Mansoor Sheik-Bahae

Proceedings Volume 11702, 117020U (2021) https://doi.org/10.1117/12.2582831

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

The Mini Astrophysical MeV Background Observatory (MAMBO) CubeSat mission

Peter Bloser, W. Thomas Vestrand, Markus Hehlen, Lucas Parker, Andrew Hoover

Proceedings Volume 11444, 114441Z (2020) https://doi.org/10.1117/12.2576143

KEYWORDS: Observatories, Gamma radiation, Spectrometer engineering, Space operations, Sensors, Particles, Device simulation

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Proceedings Article | 17 March 2020 Presentation

Presentation

Crystal growth and characterization of Yb3+-doped LiLuF4 for radiation-balanced lasers (Conference Presentation)

Azzurra Volpi, Daniel Biner, Karl Krämer, Alexander Albrecht, Mansoor Sheik-Bahae, Markus Hehlen

Proceedings Volume 11298, 112980A (2020) https://doi.org/10.1117/12.2543608

KEYWORDS: Crystals, Laser crystals, Carbon, Scanning electron microscopy, Laser development, Laser induced fluorescence, Contamination, Crystallography, Temperature metrology, Cameras

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Proceedings Article | 9 March 2020 Presentation

Presentation

The role of absorption saturation in optical refrigeration (Conference Presentation)

Azzurra Volpi, Jackson Kock, Alexander Albrecht, Markus Hehlen, Richard Epstein, Mansoor Sheik-Bahae

Proceedings Volume 11298, 1129809 (2020) https://doi.org/10.1117/12.2547681

KEYWORDS: Absorption, Temperature metrology, Cryogenics, Crystals

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Proceedings Article | 4 March 2019 Presentation

Presentation

Cryocooling arbitrary payloads: optical refrigeration coming of age (Conference Presentation)

Junwei Meng, Alexander Albrecht, Azzurra Volpi, Markus Hehlen, Richard Epstein, Mansoor Sheik-Bahae

Proceedings Volume 10936, 109360C (2019) https://doi.org/10.1117/12.2508825

KEYWORDS: Crystals, Mercury cadmium telluride, Infrared sensors, Environmental sensing, Luminescence, Thermography, Thermal modeling

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Proceedings Article | 1 March 2019 Presentation + Paper

Presentation + Paper

Bridgman growth of LiYF4 and LiLuF4 crystals for radiation-balanced lasers

Azzurra Volpi, Junwei Meng, Alexander Albrecht, Mansoor Sheik-Bahae, Daniel Biner, Karl Krämer, Markus Hehlen

Proceedings Volume 10936, 109360P (2019) https://doi.org/10.1117/12.2510691

KEYWORDS: Crystals, Laser induced fluorescence, Laser crystals, Solid state lasers, Ytterbium, Scanning electron microscopy

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Proceedings Article | 13 September 2018 Presentation + Paper

Presentation + Paper

Developments in additive manufacturing of arranged scintillating particle composites for neutron detection

Brenden Wiggins, Metodi Illiev, Andrea Favalli, Kiril Ianakiev, Markus Hehlen

Proceedings Volume 10762, 107620F (2018) https://doi.org/10.1117/12.2321670

KEYWORDS: Composites, Particles, Additive manufacturing, Scintillation, Scintillators, Optical properties, Monte Carlo methods, Optics manufacturing, Absorption, Californium

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Proceedings Article | 9 May 2018 Presentation + Paper

Presentation + Paper

Realization of an all-solid-state cryocooler using optical refrigeration

Junwei Meng, Alexander Albrecht, Aram Gragossian, Eric Lee, Azzurra Volpi, Mohammadreza Ghasemkhani, Markus Hehlen, Richard Epstein, Mansoor Sheik-Bahae

Proceedings Volume 10626, 106260B (2018) https://doi.org/10.1117/12.2305195

KEYWORDS: Crystals, Luminescence, Absorption, Laser crystals, Mirrors, Cryocoolers, Silicon, Thermography, Temperature sensors, Ytterbium

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Proceedings Article | 14 March 2018 Presentation

Presentation

Bridgman growth of fluoride crystals for radiation-balanced lasers (Conference Presentation)

Markus Hehlen, Azzurra Volpi, Junwei Meng, Alexander Albrecht, Mansoor Sheik-Bahae

Proceedings Volume 10550, 1055007 (2018) https://doi.org/10.1117/12.2284732

KEYWORDS: Crystals, Laser crystals, Solid state lasers, External quantum efficiency, Absorption, Crystal optics, Ytterbium, Solid state physics, Thermography, Material purity

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Proceedings Article | 14 March 2018 Presentation

Presentation

Investigation of temperature dependence of quantum efficiency and parasitic absorption in rare-earth doped crystals (Conference Presentation)

Aram Gragossian, Azzurra Volpi, Junwei Meng, Alexander Albrecht, Saeid Rostami, Markus Hehlen, Mansoor Sheik-Bahae

Proceedings Volume 10550, 1055006 (2018) https://doi.org/10.1117/12.2292265

KEYWORDS: Temperature metrology, Absorption, Crystals, Luminescence, Quantum efficiency, Crystal optics, Lasers, Solid state electronics, Measurement devices, External quantum efficiency

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Proceedings Article | 26 June 2017 Presentation

Presentation

Performance characterization of scintillators using a method of enhanced layered wavelength shifting coatings (Conference Presentation)

Amanda Madden, Shawn Tornga, Daniel Wakeford, Jillian Adams, Olivia Trautschold, Markus Hehlen, Hayley Suitts

Proceedings Volume 10183, 101830J (2017) https://doi.org/10.1117/12.2261111

KEYWORDS: Scintillators, Quantum efficiency, Avalanche photodetectors, Avalanche photodiodes

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Proceedings Article | 10 March 2015 Paper

Paper

Purification of precursors of Yb3+ doped YLF crystals by solvent extraction and electrochemical processing

William Boncher, Elizabeth Judge, Jose-Maria Sansinena, Matthew Dirmyer, Markus Hehlen

Proceedings Volume 9380, 938004 (2015) https://doi.org/10.1117/12.2077235

KEYWORDS: Transition metals, Electrodes, Crystals, Iron, Metals, Plating, Ytterbium, Nickel, Chemical elements, Copper

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Proceedings Article | 10 March 2015 Paper

Paper

Design study of a laser-cooled infrared sensor

Markus Hehlen, William Boncher, Steven Love

Proceedings Volume 9380, 93800I (2015) https://doi.org/10.1117/12.2077846

KEYWORDS: Crystals, Luminescence, Laser crystals, Mirrors, Absorption, Thermography, Monochromatic aberrations, Coating, Scattering, Infrared sensors

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Proceedings Article | 24 June 2014 Paper

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

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

Paper

Electrocaloric refrigerator using electrohydrodynamic flows in dielectric fluids

Markus Hehlen, Alexander Mueller, Nina Weisse-Bernstein, Richard Epstein

Proceedings Volume 8638, 86380D (2013) https://doi.org/10.1117/12.2004009

KEYWORDS: Switches, Capacitors, Electrodes, Dielectrics, Temperature metrology, Thin films, Ceramics, Copper, Convection, Microfluidics

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Proceedings Article | 14 September 2011 Paper

Paper

Light yield measurements of milled BaFCl:Eu inorganic crystals

Andy Li, N. Smith, M. Hehlen, Velma Montoya, J. Cook, E. McKigney, R. Gardner

Proceedings Volume 8144, 814404 (2011) https://doi.org/10.1117/12.894632

KEYWORDS: Crystals, X-rays, Crystallography, Optical testing, Error analysis, Scintillators, Electrons, Composites, Manufacturing, Particles

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Proceedings Article | 18 February 2010 Paper

Paper

Crystal-field effects in fluoride crystals for optical refrigeration

Markus Hehlen

Proceedings Volume 7614, 761404 (2010) https://doi.org/10.1117/12.845626

KEYWORDS: Crystals, Laser crystals, Holmium, Ions, Neodymium, Erbium, Absorption, Glasses, Crystal optics, Thulium

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Proceedings Article | 12 February 2009 Paper

Paper

Novel materials for laser refrigeration

Markus Hehlen

Proceedings Volume 7228, 72280E (2009) https://doi.org/10.1117/12.809091

KEYWORDS: Glasses, Crystals, ZBLAN, Ions, Binary data, Solids, Absorption, Phonons, Laser crystals, Internal quantum efficiency

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Proceedings Article | 12 February 2009 Paper

Paper

Synthesis and evaluation of ultra-pure rare-earth-doped glass for laser refrigeration

Wendy Patterson, Markus Hehlen, Mansoor Sheik-Bahae, Richard Epstein

Proceedings Volume 7228, 72280C (2009) https://doi.org/10.1117/12.811914

KEYWORDS: Luminescence, Glasses, Temperature metrology, Thermometry, Laser glasses, Data acquisition, Error analysis, Spectroscopy, Linear filtering, Ytterbium

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Proceedings Article | 11 February 2008 Paper

Paper

Synthesis of ultrapure ZBLAN glass for laser refrigeration

Markus Hehlen, Richard Epstein, Wendy Patterson

Proceedings Volume 6907, 69070A (2008) https://doi.org/10.1117/12.762146

KEYWORDS: Glasses, Metals, Ions, ZBLAN, Zirconium, Crystals, Iron, Oxides, Laser glasses, Particles

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Proceedings Article | 7 March 2007 Paper

Paper

Ultrapure ZBLAN glass for optical refrigerators

Markus Hehlen, Richard Epstein

Proceedings Volume 6461, 646103 (2007) https://doi.org/10.1117/12.708304

KEYWORDS: Ytterbium, Absorption, Solids, Ions, Luminescence, ZBLAN, Glasses, Energy transfer, Copper, Iron

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Proceedings Article | 21 March 2006 Paper

Paper

Laser cooling of rare-earth doped solids: the next step

Markus Hehlen, Richard Epstein, Hiroyuki Inoue

Proceedings Volume 6130, 61300N (2006) https://doi.org/10.1117/12.663663

KEYWORDS: Ytterbium, Ions, Absorption, ZBLAN, Solids, Iron, Copper, Cryocoolers, Transition metals, Energy transfer

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Showing 5 of 31 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 26 July 2016

Tri-Technology Device Refrigeration (TTDR)

Conference Committee Involvement (7)

Tri-Technology Device Refrigeration (TTDR) III

18 April 2018 | Orlando, FL, United States

Tri-Technology Device Refrigeration (TTDR) II

11 April 2017 | Anaheim, CA, United States

Tri-Technology Device Refrigeration (TTDR)

19 April 2016 | Baltimore, MD, United States

Optical Components and Materials III

23 January 2006 | San Jose, California, United States

Optical Components and Materials II

24 January 2005 | San Jose, California, United States

Showing 5 of 7 Conference Committees

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