An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
D. A. Long,* S. Wójtewicz, V. T. Sironneau, H. Lin, Z. D. Reed, C. E. Miller, J. T. Hodges, "Frequency-agile, rapid scanning cavity ring-down spectroscopy (FARS-CRDS) measurements of the (30012)←(00001) near-infrared carbon dioxide band," J. Quant. Spectrosc. Radiat. Transfer, In preparation (2014).
T. Q. Bui,* D. A. Long,* A. Cygan, V. T. Sironneau, D. Hogan, P. M. Rapusinghe, R. Ciurylo, D. Lisak, M. Okumura,* "Observations of Dicke narrowing and speed dependence in air-broadened CO2 lineshapes near 2.06 µm," J. Chem. Phys. 141 (2014) 174301.
D. A. Long,* A. J. Fleisher, K. O. Douglass, S. E. Maxwell, K. Bielska, J. T. Hodges, D. F. Plusquellic,* "Multiheterodyne spectroscopy with optical frequency combs generated from a continuous-wave laser," Opt. Lett. 39 (2014) 2688.
D. A. Long,* A. J. Fleisher, S. Wójtewicz, J. T. Hodges, "Quantum-noise-limited cavity ring-down spectroscopy," Appl. Phys. B 115 (2014) 149.
K. O. Douglass, S. E. Maxwell, G.-W. Truong, R. D. van Zee, J. R. Whetstone, J. T. Hodges, D. A. Long, and D. F. Plusquellic,* "Rapid scan absorption spectroscopy using a waveform-driven electro-optic phase modulator in the 1.6-1.65 µm region," J. Opt. Soc. Am. B 30 (2013) 2696.
D. A. Long, S. Wójtewicz, and J. T. Hodges,* "Effects of incomplete light extinction in frequency-agile, rapid scanning spectroscopy," Proc. SPIE 8726 (2013) 87260O.
L. S. Rothman,* et al., "The HITRAN 2012 Molecular Spectroscopic Database," J. Quant. Spectrosc. Radiat. Transfer 130 (2013) 4.
D. A. Long,* G.-W. Truong, J. T. Hodges, and C. E. Miller,* "Absolute 12C16O2 transition frequencies at the kHz-level from 1.6 to 7.8 µm," J. Quant. Spectrosc. Radiat. Transfer 130 (2013) 112.
D. A. Long,* G-.W. Truong, R. D. van Zee, D. F. Plusquellic, and J. T. Hodges, "Frequency-agile, rapid scanning spectroscopy: absorption sensitivity of 2×10-12 cm-1 Hz-1/2 with an external-cavity diode laser," Appl. Phys. B 114 (2014) 489.
G.-W. Truong, D. A. Long,* A. Cygan, D. Lisak, R. D. van Zee, and J. T. Hodges,* "Comb-linked, cavity ring-down spectroscopy for measurements of molecular transition frequencies at the kHz-level," J. Chem. Phys. 138 (2013) 094201. Selected for Editor's Choice for 2013.
G.-W. Truong, K. O. Douglass, S. E. Maxwell, R. D. van Zee, D. F. Plusquellic,* J. T. Hodges, and D. A. Long,* "Frequency-agile, rapid scanning spectroscopy," Nature Photon. 7 (2013) 532.
D. A. Long,* L. Gameson, G.-W. Truong, K. Bielska, A. Cygan, J. T. Hodges, J. R. Whetstone, and R. D. van Zee, "The Effects of Variations in Buffer Gas Mixing Ratios on Commercial Carbon Dioxide Cavity Ring-Down Spectroscopy Sensors," J. Atmos. Ocean. Technol. 30 (2013) 2604.
D. A. Long,* D. J. Robichaud, and J. T. Hodges, "Frequency-stabilized cavity ring-down spectroscopy measurements of line mixing and collision induced absorption in the O2 A-band," J. Chem. Phys. 137 (2012) 014307.
D. A. Long,* A. Cygan, R. D. van Zee, M. Okumura,* C. E. Miller, D. Lisak, and J. T. Hodges,* "Frequency-stabilized cavity ring-down spectroscopy," Chem. Phys. Lett. (Frontiers Article) 536 (2012) 1.
D. A. Long and J. T. Hodges,* "On spectroscopic models of the O2 A-band and their impact upon atmospheric retrievals," J. Geophys. Res.-Atmos. 117 (2012) D12309.
E. M. Vess, C. J. Wallace, H. M. Campbell, V. E. Awadalla, J. T. Hodges, D. A. Long, and D. K. Havey,* "Measurement of H2O broadening of O2 A-band transitions and implications for atmospheric remote sensing," J. Phys. Chem. A 116 (2012) 4069.
D. A. Long, M. Okumura, C. E. Miller, and J. T. Hodges,* "Frequency-stabilized cavity ring-down spectroscopy measurements of carbon dioxide isotopic ratios," Appl. Phys. B, 105 (2011) 471.
D. A. Long, D. K. Havey, S. S. Yu, M. Okumura, C. E. Miller, and J. T. Hodges,* " O2 A-band line parameters to support atmospheric remote sensing: The rare isotopologues," J. Quant. Spectrosc. Radiat. Transfer 112 (2011) 2527.
D. A. Long, K. Bielska, D. Lisak, D. K. Havey, M. Okumura, C. E. Miller, and J. T. Hodges,* "The air-broadened, near-infrared CO2 line shape in the spectrally isolated regime: Evidence of simultaneous Dicke narrowing and speed dependence," J. Chem. Phys. 135 (2011) 064308.
D. A. Long, D. K. Havey, M. Okumura, C. E. Miller, and J. T. Hodges,* "O2 A-band line parameters to support atmospheric remote sensing," J. Quant. Spectrosc. Radiat. Transfer 111 (2010) 2021.
D.A. Long,* D.K. Havey, M. Okumura, C.E. Miller, and J.T. Hodges, "Cavity ring-down spectroscopy measurements of sub-Doppler hyperfine structure," Phys. Rev. A 81 (2010) 064502.
D. J. Robichaud, L. Y. Yeung, D. A. Long, M. Okumura,* D. K. Havey, J. T. Hodges,* C. E. Miller,* and L. R. Brown,* "Experimental line parameters of the b1Σg+ ← X3Σg- band of oxygen isotopologues at 760 nm using frequency-stabilized cavity ring-down spectroscopy," J. Phys. Chem. A 113 (2009) 13089.
D. K. Havey,* D. A. Long, M. Okumura, C. E. Miller, and J. T. Hodges, "Ultra-sensitive optical measurements of high-J transitions in the O2 A-band," Chem. Phys. Lett. 483 (2009) 49.
D. A. Long,* D. K. Havey, M. Okumura, H. M. Pickett, C. E. Miller, and J. T. Hodges, "Laboratory measurements and theoretical calculations of O2 A-band electric quadrupole transitions," Phys. Rev. A 80 (2009) 042513.
L. Chodroff, T. M. O'Neal, D. A. Long, and S. Hemkin,* "An education approach to computationally modeling dynamical systems," J. Chem. Ed. 86 (2009) 1072.
D. A. Long, L. Chodroff, T. M. O'Neal, and S. Hemkin,* "A true chemical clock: Serially coupled chlorite-iodide oscillators," Chem. Phys. Lett. 447 (2007) 340.
D. A. Long, K. Unal, R. C. Pratt, M. Malkoch,* and J. Frommer,* "Localized 'click' chemistry through dip-pen nanolithography," Adv. Mater. 19 (2007) 4471.
B. G. G. Lohmeijer, R. C. Pratt, F. Leibfarth, J. W. Logan, D. A. Long, et al., "Guanidine and amidine organocatalysts for ring-opening polymerization of cyclic esters," Macromolecules 39 (2006) 8574.
R. C. Pratt, B. G. G. Lohmeijer, D. A. Long, P. N. P. Lundberg, A. P. Dove, H. Li, C. G. Wade, R. M. Waymouth,* and J. L. Hedrick,* "Exploration, optimization, and application of supramolecular thiourea-amine catalysts for the synthesis of lactide (co)polymers," Macromolecules 39 (2006) 7863.
R. C. Pratt, B. G. G. Lohmeijer, D. A. Long, R. M. Waymouth,* and J. L. Hedrick,* "Triazabicyclodecene: A simple bifunctional organocatalyst for acyl transfer and ring-opening polymerization of cyclic esters, " J. Am. Chem. Soc. 128 (2006) 4556.
M. Hunsen,* D. A. Long, C. R. D'Ardenne, and A. L. Smith, "Mild one-pot preparation of glycosyl bromides," Carbohydr. Res. 340 (2005) 2670.
D. A. Long and J. B. Anderson,* "Bond-based corrections to semi-empirical and ab initio electronic structure calculations," Chem. Phys. Lett. 402 (2005) 524.