Ph.D. in physics from the Australian National University, January 1986.
Thesis title: "High Resolution Laser Spectroscopy of Trivalent Europium
Centers in Crystals".
M.Sc. in physics from the University of Wisconsin, May 1982.
A.B. from Oberlin College, May 1978. Majored in physics. Graduation with
PROFESSOR (2002-; chair 2004-08, F10), ASSOCIATE PROFESSOR (1995-2002), ASSISTANT
PROFESSOR (1989-95), Department of Physics Hamilton College.
Research in the field of laser spectrocopy of solids. Current project
involves the synthesis and spectroscopic characterization of rare-earth
based sol-gel glasses.
VISITING FELLOW (Jan.1998-May 1998), Laser Physics Center Research School
of Physical Sciences, The Australian National University, Canberra, A.C.T.,
Research involving spectroscopy of rare earth doped sol-gel glass, holeburning
and optically detected nuclear magnetic resonance of Europium doped fluoride
crystals, and laser-induced upconversion in Er:KLiYF5.
VISITING SCIENTIST (Feb. 1986-May 1987) IBM Almaden Research Center 650
Harry Road San Jose, CA 95120-6099.
Research in the field of high resolution holeburning spectroscopy, and
research and development of upconversion-pumped lasers.
GRADUATE STUDENT (Sept. 1982-Dec. 1985) Research School of Physical Sciences
The Australian National University. Canberra, A.C.T., 2601, Australia.
GRADUATE STUDENT (Sept. 1979-May 1982) Department of Physics University
of Wisconsin Madison, Wisconsin 53706.
For more information and photos, follow this
Research In Laser Spectroscopy of Rare Earth Based Solids
When I arrived at Hamilton, I concentrated most of my effort on
the spectroscopy of upconversion laser materials. I got into this
field as a post-doc at IBM. I was a member of the Optical Storage
group there that was working on the development of compact blue laser
devices. An Upconversion Laser produces laser light at a higher
frequency than the pump light - hence the name - and is one possible
way of creating a blue laser using readily available infrared diode
lasers as excitation sources. Our group at IBM built the first
continuous upconversion laser and then developed several more lasers
before I left in mid-87. Since then, the field has grown and many
groups all over the world are working on upconversion.
For some time now I have been working on synthesis and spectroscopy of Rare Earth
doped sol-gel glasses. I collaborate on this project with Karen Brewer in
the chemistry department here, Dan Boye from Davidson College,
and Kurt Hoffman from Whitman College. Dan has put together a web
site where you can read about our students, papers, and presentations. We've had
funding from Research Corporation and Petroleum Research Fund to support the
project and have had many students make valuable contributions to the work.
Dan and I presented posters on RE-based sol-gels
at the Dynamic Processes Conferences in Christchurch (2003) and Segovia (2007) and at ICL '08- International Conference on
Luminescence - in Lyon, France. Our group presented 3 posters and one talk at DPC '10, held at Argionne National Lab and a poster at ICL '11 in Ann Arbor. We presented 2 posters at ICL '14 in Wroclaw, Poland last summer.
Recent Research Students and their Projects
- Justin Perri (Summer 2014 and AY 2105-16) "Infra-red to Green/Violet upconversion in Er-dpoed fluoride nanocrystals"
- John Pikus (Summer 2014; AY 2015-16) "Synthesis and spectroscopy of sol-gel glasses containing Thlium dopants"
- Brad Prevel (AY 2015-16) "Upconversion and quantum cutting for solar collector applications"
- Nathan Arndt (AY 2015-16) "Chelated rare earth complexes in porous glasses via post annealing immersion"
- Andrew McWhirter (Summer 2014 and AY 14-15) "Chelated Eu ions in porous host materials"
- Vineeth Rao (Summer 2014) "Infra-red to Green/Violet upconversion in Er:YLF"
- Kevin Rovelli (Summer 2014) "Introduction of chelated Eu complexes in porous glasses via post annealing immersion"
- Alex Huss (AY 2014-14) "Fluorescnece from chelated Europium complexes in porous sol-gel glasses"
- Katie Pierce (AY 2013-14) "Distribution of RE ions in sol-gel classes and crystalline hosts"
- Eliza Jonathan (AY 2013-14) "Dono-Acception Energy Transfer in sol-gel flasses containing Gd and Tb ions"
- Bret Turner (AY 2012-13) "Fluorescence from chelated Terbium and Eurpium ions in a sol-gel matrix"
- Erin Bessette-Kirton (Summer 2011, AY 2011-12) "Tb-Tb cross relaxation as a probe of rare earth distribtion in sol-gel glasses"
- Sarah Fobes (Summer 2010, 11, AY 2010-1, 11-121) "PAI studies of sol-gel glasses with rare earth dopants"
- Lou Vilardo (AY 2010-11) "Using PAI to achieve high dopant concentrations in sol-gel silicate glasses"
- Juan Hurtado (AY 2010-11) "Chelated RE complexes in sol-gel glasses"
- Zane Glauber (Summer 2010) "Synthesis and spectroscopy of doped sol-gel glasses"
- Andrew Beyler (Academic year 09-10) "Effects of drying agents on porous
structure of sol-gel glasses"
- Kate Arpino (Academic year 09-10) "Fluorescent nanocyrstals a a probe
of porous gel structures"
- Gillian Smith (Academic year 08-09 and Summer 2008) "Rare earth doped
nanoparticles suspended in a sol-gel matrix"
- Juan Hurtado (Academic
year 08-09 and Summer 2008) "Sol-gel silicate
glasses containing Pr, Nd, Er, and Tm dopants"
- Nguyen T.T. Nguyen
(Academic year 07-08, Summers 2006 and 07) “Pulsed
laser study of Al3+ co-doping
in rare earth based sol-gel glasses” presented at Dynamic Processes
Conference ’07 and published in Journal of Luminescence. Finalist
for Apker Award.
- Dan Campbell (Academic year 07-08, Summers 2005 and 07) “Spectroscopic
study aging in sol-gel glasses”. Paper published in Journal of
- Tessa Olson (Academic year 07-08) “Synthesis and
Characterization of Rare Earth Doped Nanocrystals"
- Rose Deng (Academic year 06-07) “Systematic
study of rehydration in sol-gel glasses”
- Brendan Sullivan (Academic year 06-07) “Effects
of co-dopants on rare earth dispersion in sol-gel glasses”
- Yuqi Mao
(Summer 2006) “Effect of annealing temperature on rehydroxylation
in sol-gel glasses”
- Greg Armstrong (Academic year 05-06) “Al3+ co-doping
in rare earth based sol-gel glasses”. Results presented at March meeting
of American Physical Society, March 2006.
- Yubo Lu (Summer 2005) “Terbium spectroscopy of sol-gel derived glasses:
Hydroxylation and rehydroxylation”.
- Tessa Olson (Summer 2005) “Displacement of
granular media during formation of impact craters”.
- Jason Kurtzman (Academic
year 04-05) “Low energy impact craters in
- Greg Armstrong (Summer 2004) "Combustion synthesis
of Y2O3"Eu3+ nanocrystals"
Sullivan (Summer 2004) "5D3 emission
in Tb3+ doped sol-gel glass"
- Andrew Magyar (Academic year 02-03) "Using Chelating Agents in Sol-Gel
Synthesis to combat the OH Radical Problem" Presented at DPC '03 in Christchurch,
Over the years I have taught introductory physics for science majors
and pre-meds, Quantum Physics, Classical Mechanics, and have directed senior
research projects. Last fall I taught Physics190, our course for entering physics
majors.This year I'm returning to Quantum Physics, then in the spring I have a junior-level advanced lab course designed to prepare
students for their senior research projects.
Several years ago I taught a
sophomore seminar with Ella Gant of the Art Department. It was called Art
and Physics of the Image and was a lot of fun.
Publications - since 2000 (* denotes student author)
- A.J. Silversmith, A.P. Beyler*, K.E. Arpino*, D.M. Boye, K.R. Hoffman “Mechanisms of fluorescence enhancement in rare earth doped sol-gel glasses containing Al3+” J.Lumin 131 (2011) 457-460.
- K.E. Arpino*, A.J. Silversmith, D.M. Boye, K.R. Hoffman “Post Annealing Immersion: a new technique for studying rare earth ions in porous materials” J.Lumin.131 (2011) 453-45.
- A.P. Beyler*, A.J. Silversmith, D.M. Boye, K.R. Hoffman “Effects of drying control chemical additives on rare-earth doped sol-gel glasses ”Physics Procedia. 13, (2011) 4-8.
- K.R. Hoffman, H. Alazar*, D.M. Boye, A.J. Silversmith “Luminescence
and x-ray Diffraction Studies of Rare Earth Doped Silica Sol-Gel Glass” invited
paper to be presented at ECS, Vienna, Austria October 2009.
- A.J. Silversmith, N.T.T. Nguyen*, D.L. Campbell*, D.M. Boye,
C. Ortiz*, K.R. Hoffman "Fluorescence Yield in Rare earth doped sol-gel
silicate glasses" J. Lumin. 129, 1501-1504 (2009).
Silversmith, N.T.T. Nguyen*, B.W. Sullivan*, D.M. Boye, C. Ortiz*, K.R.
Hoffman “Rare-earth ion distribution in sol-gel glasses co-doped
with Al3+” J. Lumin. 128, 931-933 (2008).
- D.M. Boye, C.P. Ortiz*, A.J. Silversmith, N.T.T. Nguyen*, K.R. Hoffman “Rare-Earth
Ion Distribution In Sol-Gel Silicate Glasses” J. Lumin.129, 888-890
- D.M. Boye, A. J. Silversmith, Thao Nguyen Nguyen*, and K. R. Hoffman. “Effects
of rehydration on Tb3+ spectroscopy in sol-gel glasses”, J. Noncryst.
Solids 353, 2350-54 (2007).
- A. J. Silversmith, D. M. Boye, K. S. Brewer, C. E. Gillespie*,
Y. Lu*, and D. L. Campbell* “5D3 - 5FJ emission
in terbium-doped sol-gel glasses” J. Lumin. 121, 14 (2006).
- A.P. Magyar*, A.J. Silversmith, K.S. Brewer, and D.M. Boye, "Fluorescence
enhancement by Chelation of Eu3+ and Tb3+ ions in sol-gels",
J. Lumin. 108, 43 (2004).
- R.E. Anderman*, A.J. Silversmith, K.S. Brewer, T.S. Valdes*, J.H. Nolen*
and D.M. Boye, R.S. Meltzer, "Transient and Persistent Spectral Hole Burning
in Eu3+-doped sol-gel produced SiO2 glass", J. Lumin.
108, 49 (2004).
- A.J. Silversmith, D.M. Boye, R.E. Anderman* and K.S. Brewer. "Fluorescence
line-narrowing and decay dynamics in sol-gel glasses containing Eu3+",
presented at DPC, Lyon, France July 2001 and J. Lumin 94-94 275-278 (2001).
- D.M. Boye, A.J. Silversmith, J. Nolen*, L. Rumney*, D. Shaye*, B.C. Smith*,
and K.S. Brewer, "Red-to-green upconversion in Er-doped SiO2 and SiO2/TiO2
sol-gel silicate glasses", (DPC, Lyon, France July 2001) and and J. Lumin
94-94 279 (2001).
- A. Smith, N.B. Manson, A.J. Silversmith, and B. Henderson, "Site Selective
Excitation and Upconversion in Er3+:KLiYF5", Optics
Communications 188, no1-4, 219 (2001).
- Allen P. Otto*, Karen S. Brewer and Ann J. Silversmith, "Red to Blue Upconversion
in Tm-doped sol-gel silicate glasses", J. Noncryst. Solids 265, 176-180 (2000).