Papers

Listed below are the most recent papers from our group.

2016
  • Erica Block, Michael Young, David Winters, Jeff Field, Randy Bartels, Jeff Squier, “Simultaneous spatial frequency modulation imaging and micromachining with a femtosecond laser, “ Optics Letters, vol. 41, No. 2, January 2016, pp 265-268.
  • Jeffrey J. Field, Keith A. Wernsing, Scott R. Domingue , Alyssa M. Allende-Motz , Keith F. DeLuca, Dean H. Levi , Jennifer G. DeLuca, Michael D. Young , Jeff A. Squier  and Randy A. Bartels, “Super-resolved multimodal multiphoton microscopy with spatial frequency-modulated imaging,” PNAS, doi/10.1073/pnas.1602811110 (May 2016).
  • K. Roth, K. B. Neeves, J. Squier, and D. W. M. Marr, “High-throughput linear optical stretcher for mechanical characterization of blood cells,” Cytometry A, vol. 89A, Issue 4, April 2016, pp 391-397.
2015
  • M.Young, J. Field, K. Sheetz, R. Bartels, J. Squier, “A pragmatic guide to multiphoton microscope design,” invited article, Advances in Optics and Photonics, Vol. 7, Issue 2, pp. 276-378 (2015).
  • C. Durfee, J. Squier, “Spatial temporal focusing: Advances and Applications, “ invited article, DOI: 10.1109/JPHOT.2015
    K. B. Roth, K. B. Neeves, J. Squier, and D. W. M. Marr, “Imaging of a linear diode bar for an optical cell stretcher, “ Biomedical Optics Express, 1 Mar 2015, Vol. 6, No. 3, DOI:10.1364/BOE.6.000807.
  • Amanda K. Meier, Marin Iliev, Jeff Squier, and Charles G. Durfee, “Broadband interferometric characterization of divergence and spatial chirp,” Optic Lett. Vol. 40, No.17, 1 September 2015, pp. 4066-4069.
  • M. Greco, E. Block, A. Meier, A. Beaman, S. Cooper, M. Iliev, J. Squier, C. Durfee, “Spatial-spectral characterization of focused spatially-chirped broadband laser beams, “ Applied Optics, 54, 98118-9822 (2015).
2014
  • J. Squier, J. Thomas, E. Block, C. Durfee, S. Backus, “High average power Yb:CaF2 femtosecond amplifier with integrated simultaneous spatial and temporal focusing for laser material processing,” invited paper, Applied Physics A, vol. 114 , pp. 209- 214 (2014). 
  • E. Block, J. Thomas, C. Durfee, J. Squier, “Integrated single grating compressor for variable pulse front tilt in simultaneously spatially and temporally focused systems,” Optics Letters, vol. 35, no. 24, pp. 6915-6917, December 15 (2014). 
  • M. Iliev, A. K. Meier, B. Galloway, D. E. Adams, J. A. Squier, C. G. Durfee, “Measurement of energy contrast of amplified ultrashort pulses using cross-polarized wave generation and spectral interferometry,” Optics Express 22, 17968 (2014). 
2013
  • Erica Block, Michael Greco, Dawn Vitek, Omid Masihzadeh, Davida Ammar, Malik Kahook, Naresh Mandava, Charles Durfee, Jeff Squier, “Simultaneous spatial and temporal focusing for tissue ablation, “ Biomedical Optics Express, vol. 4, No. 6, 831-841, June (2013).
  • Erich Hoover, Jeff Squier, “Advances in Multiphoton Microscopy Technology, “ invited review, Nature Photonics, 93-101 vol. 7, February (2013).
  • Michael Young, Sterling Backus, Charles Durfee, Jeff Squier, “Multiphoton imaging with a direct-diode pumped Ti:sapphire laser,” J. of Microscopy, doi: 10.1111, (2012).
2012
  • C.G. Durfee, M. Greco, E. Block, D. Vitek, and J.A. Squier, “Intuitive analysis of space-time focusing with double ABCD calculation,” Opt Express, 20, 14244 (2012).
  • C.G. Durfee, T. Storz, J. Garlick, S. Hill, J. A. Squier, M. Kirchner, G. Taft, K. Shea, H. Kapteyn, M. Murnane, and S. Backus, “Direct diode-pumped Kerr-lens mode-locked laser”, Opt Express, 20, 13677 (2012).
  • E. Hoover, J. Field, D. Winters, M.Young, E. Chandler, J. Speirs, J. Lapenna, S. Kim, S. Ding, J. Wang, R. Bartels, J. Squier, “Eliminating the scattering ambiguity in multifocal, multimodal, multiphoton imaging systems,” J. of Biophotonics, 5, No. 5–6, 425–436 (2012).
2011
  • J. Field, K. Sheetz, E. Chandler, E. Hoover, M. Young, S. Ding, A. Sylvester, D. Kleinfeld, J.A. Squier, Differential Multiphoton Microscopy, IEEE JQE, invited paper, 99,1-15 (2011)
  • Erich E. Hoover, Michael D. Young, Eric V. Chandler, Anding Luo, Jeffrey J. Field, Kraig E. Sheetz, Anne W. Sylvester, and Jeff A. Squier, Remote focusing for programmable multi-layer differential multiphoton microscopy, Biomedical Optics Express Vol. 2, Issue 1, pp. 113–122 (2011).
  • E. Chandler, C. Durfee, J. Squier, Integrated spectrometer design with application to multiphoton microscopy, Optics Express, Vol. 19, Issue 1, pp. 118-127 (2011).
  • Jonathan D. Driscoll, Andy Y. Shih, Satish Iyengar, Jeffrey J. Field, G. Allen White, Jeffrey A. Squier, Gert Cauwenberghs and David Kleinfeld, Photon counting, censor corrections, and lifetime imaging for improved detection in two-photon microscopy, Journal of Neurophysiology: Innovative Methodology, 105:3106-3113 (2011).
  • E. Hoover, E. Chandler, J.Field, D. Vitek, M. Young, J. A. Squier, Utilizing Ultrafast Lasers for Multiphoton Biomedical Imaging, book chapter, to appear in SUSSP66 Nonlinear Optics.
2010
  • Dawn N. Vitek, Erica Block, Yves Bellouard, Daniel E. Adams, Sterling Backus, David Kleinfeld, Charles G. Durfee and Jeffrey A. Squier, Spatio-temporally focused femtosecond laser pulses for nonreciprocal writing into optically transparent materials, Optics Express, 18, Issue 24, pp. 24673-24678 (2010).
  • Dawn N. Vitek, Daniel E. Adams, Adrea Johnson, Philbert S. Tsai, Sterling Backus, Charles G. Durfee, David Kleinfeld, and Jeffrey A. Squier, Temporally focused femtosecond laser pulses for low numerical aperture micromachining through optically transparent materials, Optics Express, Vol. 18, Issue 17, pp. 18086-18094 (2010).
  • Jeffrey J. Field, Charles G. Durfee, and Jeff A. Squier, Blind FROG pulse characterization for quantitative differential multiphoton microscopy, Opt. Lett., Vol.35, No. 20, 3369-3371 (2010). 
  • Jeffrey J. Field, Ramón Carriles, Kraig E. Sheetz, Eric V. Chandler, Erich E. Hoover, Shane E. Tillo, Thom E. Hughes, Anne W. Sylvester, David Kleinfeld, and Jeff A. Squier, Optimizing the fluorescent yield in two-photon laser scanning microscopy with dispersion compensation, Optics Express 18 (13), 13361-13672 (2010).
  • Ihab Sraj, Charles D. Eggleton, Ralph Jimenez, Erich Hoover, Jeff Squier, Justin Chichester, David W.M. Marr, Cell Deformation Cytometry using Diode-Bar Optical Stretchers, J. Biomed. Opt. Vol. 15, 047010 (Aug. 4, 2010). 
  • D. E. Adams, T. A. Planchon, J. A. Squier, and C. G. Durfee, Spatiotemporal dynamics of cross-polarized wave generation, Opt. Lett. 35, 1115-1117 (2010).
2009
  • K. Sheetz, J. Squier, Ultrafast Optics: Imaging and Manipulating Biological Systems, Journal of Applied Physics 105, 051101 (2009). (Invited review)
  • Philbert Tsai, Pablo Blinder , Benjamin J Migliori, Joseph Neev, Yishi Jin, Jeffrey A Squier, and David Kleinfeld, Plasma-mediated ablation: an optical tool for submicrometer surgery on neuronal and vascular systems, Current Opinion in Biotechnology, 20:1–10 (2009). (Invited review)
  • Ramón Carriles, Dawn N. Schafer, Kraig E. Sheetz, Jeffrey J. Field, Richard Cisek, Virginijus Barzda, and Jeffrey A. Squier, Invited Review Article: Imaging techniques for harmonic and multiphoton absorption fluorescence microscopy, Review of Scientific Instruments, 80, 081101 (2009). (Invited review)
  • E. Chandler, E. Hoover, J. Field, K. Sheetz, W. Amir, R. Carriles, S.Y. Ding, J. Squier, High-resolution mosaic imaging with multifocal, multiphoton photon-counting microscopy, Applied Optics, 10, vol. 48. pp. 2067 – 2077 (2009).
  • D. E. Adams, T. A. Planchon, A. Hrin, J. A. Squier, and C. G. Durfee, Characterization of coupled nonlinear spatiospectral phase following an ultrafast self-focusing interaction, Opt. Lett. 34, 1294-1296 (2009).
  • Dawn N. Schafer, Emily A. Gibson, Evan A. Salim, Amy E. Palmer, Ralph Jimenez, and Jeff Squier, Microfluidic cell counter with embedded optical fibers fabricated by femtosecond laser ablation and anodic bonding, Opt. Express, Vol. 17, Issue 8, pp. 6068-6073  (2009). 
  • Robert W. Applegate Jr., David W. M. Marr, Jeff Squier, and Steven Graves, Particle size limits when using optical trapping and deflection of particles for sorting using diode laser bars, Opt. Express 17, 16731-16738 (2009). 
  • Dawn Schafer, Michiel Müller, Mischa Bonn, David W. M. Marr, Jan van Maarseveen, and Jeff Squier, Coherent anti-Stokes Raman scattering microscopy for quantitative characterization of mixing and flow in microfluidics, Opt. Lett. 34, 211-213 (2009).
2008
  • K. Sheetz, E. Hoover, R. Carriles, D. Kleinfeld, J. A. Squier, Advancing multifocal nonlinear microscopy: development and application of a novel multibeam Yb:KGd(WO4)2 oscillator, Opt. Express, vol. 16, pp.17574 -17584, (2008).
  • D. Schafer, J. A. Squier, J. van Maarseveen, D. Bonn, M. Bonn and M. Müller, In situ Quantitative measurement of concentration profiles in a microreactor with submicron resolution using multiplex CARS microscopy, J. Am. Chem. Soc. 130, 11592-11593 (2008).
  • C. Durfee, J. Squier, S. Kane, A modular approach to the analytic calculation of spectral phase for grisms and other refractive/diffractive structures, Optics Express, Vol. 16, 18004-18016 (2008).
  • T. Planchon, C. Childress, J. Squier, C. Durfee, Measurement of pump-induced transient lensing at 1 kHz repetition rate in a cryogenically-cooled high average power Ti:sapphire amplifier, Optics Express, Vol. 16, 18557-18564 (2008).
  • R. Carriles, K. E. Sheetz, E. E. Hoover, J. A. Squier, and V. Barzda, Simultaneous multifocal, multiphoton, photon counting microscopy, Opt. Express, vol. 16, pp. 10364, (2008).
  • W. Amir, C. Durfee, D. Schafer,  E. Gibson, L. Kost, E. Prezkwas,  R. Jimenez, J. Squier, Linear spatio-temporal characterization of a UV microscope objective for nonlinear imaging and spectroscopy by using two -dimensional spectral interferometry, Journal of Microscopy, vol. 230, Pt 1 2008, pp. 4-8
  • R.Applegate, J. Squier, T. Vestad, J. Oakey, D. Marr, Fiber-focused diode bar optical trapping for microfluidic flow manipulation, Applied Physics Letters, 92 013904 (2008).
2007
  • J.J. Field, C. Durfee, J. A. Squier, S. Kane, Quartic-phase-limited grism-based ultrashort pulse shaper, Optics Letters, Vol. 32, Issue 21, pp. 3101-3103 (2007).
  • D. Schafer, E. A. Gibson, W. Amir, R. Erikson, J. Lawrence, T. Vestad, J. Squier, R. Jimenez, D.W. M.  Marr, Three-dimensional chemical concentration maps in a microfluidic device using two-photon absorption fluorescence imaging, Optics Letters, Vol. 32, Issue 17, pp.2568-2570 (2007).
  • R. W. Applegate, D. N. Schafer, W. Amir, J. Squier, T. Vestad, J. Oakey, D. W. M. Marr, Optically integrated microfluidic systems for cellular characterization and manipulation, J. Opt. A: Pure Appl. Opt. 9 , s122-s128 (2007).
  • J.J. Field, T. Planchon, W. Amir, C. Durfee, J. A. Squier, Characterization of a high efficiency, ultrashort pulse shaper incorporating a reflective 4096-element spatial light modulator,  Optics Communications, Vol. 278, pp. 368-376 (2007).
  • S. Bera, A. J. Sabbah, J. M. Yarbrough, C.G. Allen, B. Winters, C.G. Durfee, J.A. Squier, Optimization study of the femtosecond laser-induced forward-transfer process with thin Aluminum films, Applied Optics, Vol. 46., Issue 21, 4650 (2007).
  • W. Amir, R. Carriles, E. Hoover, T.A. Planchon, C.G. Durfee, J. A. Squier, Simultaneous imaging of multiple focal planes using a two-photon scanning microscope, Optics Letters, Vol. 32, Issue 12, pp. 1731-1733 (2007).
  • W. Amir, T.A. Planchon, C.G. Durfee, J.A. Squier,  Complete characterization of a spatiotemporal pulse shaper with two-dimensional Fourier transform spectral interferometry, Optics Letters, Vol. 32, Issue 8. pp. 939-941 (2007).
  • S. Kane, J. Squier, R. Jimenez, L. Kuznetsova, F. Wise, H. Kapteyn, B. Touzet, Reflection grisms compensate dispersion in ultrafast systems, Laser Focus World, May 2007.
  • L. Kuznetsova, F. Wise, S. Kane, and J. Squier, Chirped-pulse amplification of femtosecond pulses near the gain-narrowing limit of Yb-doped fiber using a reflection grism compressor, App. Phys. B, vol. 88, no. 4, pp. 515-518 (2007).
2006
  • R. Chadwick, E. Spahr, J.A. Squier, C.G. Durfee, B.C. Walker, D. Fittinghoff, Fringe-free, background-free, collinear third harmonic generation FROG measurements for Multiphoton microscopy, Optics Letters, Vol. 31, Issue 22, pp. 3366-3368 (2006).
  • W. Amir, T. Planchon, C. Durfee, J. Squier, P. Gabolde, R. Trebino, M. Muller, Simultaneous visualization of spatial and chromatic aberrations by 2D Fourier Transform spectral interferometry,  Optics Letters, Vol. 31, Issue 19, pp. 2927-2929 (2006).
  • D. Gaudiosi, E. Gagnon, A. Lytle, J. Fiore, E. Gibson, S. Kane, J. Squier, M. Murnane, H. Kapteyn, R. Jimenez, S. Backus, “Multikilohertz repetition rate Ti:sapphire amplifier based on down chirped pulse amplification,: Optics Express, Volume 14, Issue 20, pp. 9277-2216 (2006).
  • E. Gibson, D. Gaudiosi, H. Kapteyn, R. Jimenez, S .Kane, R. Huff, C. Durfee, J. Squier, Efficient reflection grisms for pulse compression and dispersion compensation of femtosecond pulses, Optics Letters, Vol. 31, Issue 22, pp. 3363-3365 (2006).
  • T.A. Planchon, W. Amir, J.J. Field, P. Rousseau, O. Albert, G. Mourou, C.G. Durfee, J.A. Squier, Adaptive Correction of a Tightly Focused, High-Intensity Laser Beam by Use of a Third-Harmonic Signal Generated at an Interface, Optics Letters, Vol. 31, Issue 14, pp. 2214-2216 (2006).
  • O. Clay, A. Millard, C. Schaffer, J. Aus der Au, P. Tsai, J. Squier, D. Kleinfeld, Spectroscopy of Third-Harmonic Generation: Evidence of Resonances in Model Compounds and Ligated Hemoglobin, JOSA B, Vol. 23, Issue 5, pp. 932-950 (2006).
  • C.G. Durfee, S. Bera, A.J. Sabbah, J.A. Squier, M.Ellison, Spectral shaping filter for broadband amplifiers,Optics Communications, Vol. 263, Issue, pp. 256-260 (2006).
  • R. Applegate, J.Squier, T.Vestad, J. Oakey, D. Marr, P. Bado, M. Dugan, A. Said, Microfluidic sorting system based on optical waveguide integration and diode laser bar trapping, Lab on a Chip, Vol. 6, p.422 (2006).
2005
  • S. Bera, A.J. Sabbah, C.G. Durfee, J. Squier, Development of a novel femtosecond micromachining workstation using spectral interferometry, Optics Letters, Vol. 30, Issue 4, pp. 374-376 (2005).
  • T. Stiles, R. Fallon, T. Vestad, D. Marr, J. Squier, R. Jimenez, Hydrodynamic focusing for vacuum-pumped microfluidics, Microfluidics and Nanofluidics, Vol. 1, p. 280 (2005).
  • V. Barzda, C. Greenhalgh, J. Aus der Au, S. Elmore, J. van Beek, J. Squier, Visualization of mitochondria in cardiomyocytes by simultaneous harmonic generation and fluorescence microscopy, Optics Express, Vol. 13, p.8263 (2005).
  • D.N.Fittinghoff, J. Aus der Au, J.A. Squier, Spatial and temporal characterizations of femtosecond pulses at high-numerical aperture using collinear, background-free, third harmonic autocorrelation, Optics Communications, Vol. 247, pp.405-426 (2005).
2004
  • R. Applegate, J. Squier, T. Vestad, J. Oakey, D. Marr, Optical trapping, manipulation, and sorting of cells and colloids in microfluidic systems with diode laser bars, Optics Express, Vol. 12, No. 19, pp. 4390-4398 (2004).
Grism, developed in conjunction with Dr. Steve Kane

Grism, developed in conjunction with Dr. Steve Kane

Omid Masihzadehm CSU PhD Student in Electrical Engineering, Kraig Sheetz, School of Mines PhD student in Physics, and Dawn Schafer, School of Mines PhD student in Physics, building a KGW (yturbium) Laser at the School of Mines, a collaborative project with NIST/CU, Colorado State University and Colorado School of Mines.

CSM/CSU Yb:KGW laser imaging projects

Chip Durfee (left) and Jeff Squier (right) Physics Professors, Colorado School of Mines with a Terawatt Kilohertz laser system.

TW kilohertz amplifier development