Markus Hehlen
Markus Hehlen
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Power dependence of upconversion luminescence in lanthanide and transition-metal-ion systems
M Pollnau, DR Gamelin, SR Lüthi, HU Güdel, MP Hehlen
Physical Review B 61 (5), 3337, 2000
Hexagonal sodium yttrium fluoride based green and blue emitting upconversion phosphors
KW Krämer, D Biner, G Frei, HU Güdel, MP Hehlen, SR Lüthi
Chemistry of materials 16 (7), 1244-1251, 2004
Encyclopedia of materials: science and technology
G Parker
Elsevier, 2001
Spectroscopic properties of Er 3+-and Yb 3+-doped soda-lime silicate and aluminosilicate glasses
MP Hehlen, NJ Cockroft, TR Gosnell, AJ Bruce
Physical Review B 56 (15), 9302, 1997
50th anniversary of the Judd–Ofelt theory: An experimentalist's view of the formalism and its application
MP Hehlen, MG Brik, KW Krämer
Journal of Luminescence 136, 221-239, 2013
Cooperative bistability in dense, excited atomic systems
MP Hehlen, HU Güdel, Q Shu, J Rai, S Rai, SC Rand
Physical review letters 73 (8), 1103, 1994
Constraining the Evolution of the Fundamental Constants with a Solid-State Optical Frequency Reference Based on the Th 229 Nucleus
WG Rellergert, D DeMille, RR Greco, MP Hehlen, JR Torgerson, ...
Physical review letters 104 (20), 200802, 2010
Uniform upconversion in high-concentration Er3+-doped soda lime silicate and aluminosilicate glasses
MP Hehlen, NJ Cockroft, TR Gosnell, AJ Bruce, G Nykolak, J Shmulovich
Optics Letters 22 (11), 772-774, 1997
Dynamics of infrared-to-visible upconversion in Cs 3 Lu 2 Br 9: 1% Er 3+
MP Hehlen, G Frei, HU Güdel
Physical Review B 50 (22), 16264, 1994
Solid-state optical refrigeration to sub-100 Kelvin regime
SD Melgaard, AR Albrecht, MP Hehlen, M Sheik-Bahae
Scientific reports 6 (1), 1-6, 2016
Local lattice dynamics and the origin of the relaxor ferroelectric behavior
W Dmowski, SB Vakhrushev, IK Jeong, MP Hehlen, F Trouw, T Egami
Physical review letters 100 (13), 137602, 2008
Cooperative optical bistability in the dimer system Cs3Y2Br9:10% Yb3+
MP Hehlen, HU Güdel, Q Shu, SC Rand
The Journal of chemical physics 104 (4), 1232-1244, 1996
Upconversion in Er 3+-dimer systems: Trends within the series Cs 3 Er 2 X 9 (X= Cl, Br, I)
MP Hehlen, K Krämer, HU Güdel, RA McFarlane, RN Schwartz
Physical Review B 49 (18), 12475, 1994
Site-Selective, Intrinsically Bistable Luminescence of Ion Pairs in
MP Hehlen, A Kuditcher, SC Rand, SR Lüthi
Physical review letters 82 (15), 3050, 1999
Near-infrared to visible upconversion in Er 3+-doped Cs 3 Lu 2 Cl 9, Cs 3 Lu 2 Br 9, and Cs 3 Y 2 I 9 excited at 1.54 μm
SR Lüthi, M Pollnau, HU Güdel, MP Hehlen
Physical Review B 60 (1), 162, 1999
Optical spectroscopy of the dimer system Cs3Yb2Br9
MP Hehlen, HU Güdel
The Journal of chemical physics 98 (3), 1768-1775, 1993
Model of laser cooling in the Yb 3+-doped fluorozirconate glass ZBLAN
MP Hehlen, RI Epstein, H Inoue
Physical Review B 75 (14), 144302, 2007
Optical Refrigeration
RI Epstein, M Sheik-Bahae, MP Hehlen
Science and Applications of Laser Cooling of Solids., Wiley, 2009
Crystalline electric field effects in Ce M In 5 (M= Co, Rh, Ir): Superconductivity and the influence of Kondo spin fluctuations
AD Christianson, ED Bauer, JM Lawrence, PS Riseborough, NO Moreno, ...
Physical Review B 70 (13), 134505, 2004
Optically integrating pixel microstructure
WK Bischel, DAG Deacon, NJ Cockroft, MP Hehlen, DK Wagner, ...
US Patent 6,208,791, 2001
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