David Long

408-821-0330

Biography

David Long received his Ph.D. in physical chemistry from the California Institute of Technology under the guidance of Prof. Mitchio Okumura. He then moved to the National Institute of Standards and Technology where he was a Project Leader in the Photonics and Optomechanics group. He is presently an incoming professor at the

College of Optics and Photonics (CREOL) at the University of Central Florida. Dr. Long’s research has focused on the development and application of optical methods to present problems in nanophotonics, quantum information science, integrated photonics, and nonlinear optics. These instrumental approaches have been applied in areas such as quantum sensing, Rydberg radiofrequency sensing, photonic quantum systems, ultrafast dynamics, and inertial sensing.

His group employs integrated photonics, optical frequency combs, and nonlinear optics to solve pressing problems in quantum information science, molecular spectroscopy, and quantum sensing. With these unique tools the group can produce powerful, agile optical frequency combs in the near-infrared and then spectrally translate them to critical wavelengths in the visible for quantum science or the mid-infrared for molecular sensing and dynamics. Further, the group’s recent advancements in thin-film lithium niobate electro-optic modulators and optical isolators will allow us to produce chip-scale platforms for integrated quantum sensing and communications with low size, weight, and power. Future efforts will aim to apply these capabilities for mid-infrared sensing of highly dynamic environments as well as to produce fully integrated platforms for quantum science and multiplexed quantum state preparation.

Awards

Presidential Early Career Award for Scientists and Engineers (PECASE)
Coblentz Award (International award for best spectroscopist under 40)
Department of Commerce Silver Medal
NIST Sigma Xi Katherine B. Gebbie Young Scientist Award
National Science Foundation Graduate Fellowship
National Defense Science and Engineering Fellowship
Barry M. Goldwater Scholarship
Morris K. Udall Scholarship
Finalist for the Rhodes and Marshall Fellowships
Honorable mention for the 2025 Optics Continuum Best Paper Prize

Publications

K. Han, et al., “Integrated optical isolators for broadband multi-laser operation,” Nature Photon., In Press (2026).

D. A. Long*, G. C. Mathews, S. Pegahan, A. Ross, S. C. Coburn, P.-W. Tsai, G. B. Rieker, A. T. Heiniger, “Mid-infrared dual comb spectroscopy via continuous-wave optical parametric oscillation,” APL Photonics, 11, 076115 (2026).

S. M. Bresler, et al., “Electro-optic frequency comb Doppler-broadening thermometry,” Opt. Express, 34, 12121 (2026).

R. Zektzer, A. Chanana, X. Lu, D. A. Long*, K. Srinivasan*, “Laser injection locking and nanophotonic spectral translation of electro-optic frequency combs,” Optica, 12, 1597 (2025).

U. A. Javid, M. Chojnacky, D. A. Long, K. Srinivasan*, G. Moille*, “Dynamic tuning of soliton microcomb repetition rate without direct cavity actuation,” OSA Cont., 4, 1744 (2025). Honorable mention for the 2025 Optics Continuum Best Paper Prize.

Z. D. Reed*, M. Birk, Y. Tan, C. E. Cecelski, G. Wagner, S.-M. Hu, D. A. Long, R.-H. Yin, J T. Hodges, Multi-laboratory measurements of 12CH4 2ν3 band line parameters. Part I: Line intensities with relative combined standard uncertainties at the permille level, J. Quant. Spectrosc. Radiat. Transfer, 345, 109571 (2025).

J. T. Hodges*, D. A. Long, I. Gordon, D. Mondelain, S. Kassi, A. Campargue, H. Fleurbaey, “Disentangling magnetic dipole and electric quadrupole intensity contributions in spectra of molecular oxygen at 1.27 um. Updated line positions and intensities,” J. Quant. Spectrosc. Radiat. Transfer, Under Review (2025).

L. G. Connolly, S. M. Bresler, D. A. Long, J. J. Gorman*, “Microwave frequency comb interrogation of high-overtone bulk acoustic resonators for high-speed, multi-modal mass sensing,” 2025 IEEE 38th International Conference on Micro Electro Mechanical Systems (MEMS), Kaohsiung, Taiwan, 950-953, (2025).

N. Prajapati*, D. A. Long, A. B. Artusio-Glimpse, S. M. Bresler, C. L. Holloway, “Multiband RF field reception in Rydberg atoms via dual-band frequency comb spectroscopy,” Proc. SPIE 13392, Quantum Sensing, Imaging, and Precision Metrology III, 1339215 (2025).

N. Prajapati, D. A. Long*, A. B. Artusio-Glimpse, S. M. Bresler, C. L. Holloway*, “Multichannel, ultra-wideband Rydberg electrometry with an optical frequency comb,” Nature Comm., 16, 11054 (2025).

A. B. Artusio-Glimpse*, D. A. Long*, et al., “Increased instantaneous bandwidth of Rydberg atom electrometry with an optical frequency comb probe,” arXiv:2402.17942 (2024).

D. A. Long,* J. R. Stone, Y. Sun, D. Westly, K. Srinivasan,* “Sub-Doppler spectroscopy of quantum systems through nanophotonic spectral translation of electro-optic light,” Nature Photon.,

D. A. Long,* et al., “Nanosecond time-resolved dual-comb absorption spectroscopy,” Nature Photon., 18, 127 (2024). Featured on the cover of Nature Photonics.

S. M. Bresler, et al., “Coherently averaged optical frequency comb spectroscopy with a single electro-optic modulator,” Opt. Lett., 50, 654-65 (2024).

K. Han, D. A. Long,* et al., “Low-power, agile electro-optic frequency comb spectrometer for integrated sensors,” Optica, 11, 392 (2024).

S. M. Bresler, D. A. Long,* et al., “GPU-enabled real-time optical frequency comb spectroscopy and a photonic readout,” Opt. Lett., 48, 5887 (2023).

A. T. Heiniger,* M. J. Cich, D. A. Long,* “High power, frequency agile comb spectroscopy in the mid-infrared enabled by a continuous-wave optical parametric oscillator,” Opt. Express, 32, 23536 (2024).

C. S. Callahan, S. M. Bresler, S. C. Coburn, D. A. Long, G. B. Rieker,* “GAAS: GPU Accelerated Absorption,” J. Quant. Spectrosc. Radiat. Transfer, 333, 109307 (2024).

J. R. Stroud,* D. A Long, D. F Plusquellic, “Single-modulator, dual comb serrodyne spectroscopy,” Opt. Lett., 49, 3878-3881 (2024).

D. A. Long,* S. M. Bresler, Y. Bao, B. J. Reschovsky, J. T. Hodges, J. R. Lawall, T. W. LeBrun, J. J. Gorman, “Single-modulator, direct frequency comb spectroscopy via serrodyne modulation,” Opt. Lett., 48, 892 (2023).

D. A. Long*, et al., “High accuracy, high dynamic range optomechanical accelerometry enabled by dual comb spectroscopy,” APL Photonics 8, 091302 (2023).

D. A. Long,* E. M. Adkins, J. Mendonca, S. Roche, J. T. Hodges, “The effects of advanced spectral lineshapes on atmospheric carbon dioxide retrievals,” J. Quant. Spectrosc. Radiat. Transfer, 291, 108324 (2022).

D. A. Long,* B. J. Reschovsky, T. W. LeBrun, J. J. Gorman, J. T. Hodges, D. F. Plusquellic, J. R. Stroud, “High dynamic range electro-optic dual-comb interrogation of optomechanical sensors,” Opt. Lett., 47, 4323 (2022).

A. Chijioke,* R. A. Allen, S. E. Fick, D. A. Long, B. J. Reschovsky, J. H. Strait, R. P. Wagner, “Optical-cavity-based primary sound standard,” 28th

B. J. Reschovsky,* D. A. Long,* et al., “Intrinsically accurate sensing with an optomechanical accelerometer,” Opt. Express, 30, 19510 (2022).

I. Gordon,* et al., “The HITRAN2020 molecular spectroscopic database,” J. Quant. Spectrosc.

Z. D. Reed,* D. A. Long, J. T. Hodges, B. J. Drouin, “Molecular transition frequencies of CO2 near 1.6 µm with kHz-level uncertainties, ” J. Quant. Spectrosc. Radiat. Transfer, 271, 107681 (2021).

R. Hashemi,* et al., “Improvement of the spectroscopic parameters of the air- and self-broadened N2O and CO lines for the HITRAN2020 database applications,” J. Quant. Spectrosc. Radiat. Transfer, 271, 107735 (2021).

H. Fleurbaey, Z. D. Reed, E. M. Adkins, D. A. Long, J. T. Hodges,* “High accuracy spectroscopic parameters of the 1.27 µm band of O2 measured with comb-referenced, cavity ring-down spectroscopy,” J. Quant. Spectrosc. Radiat. Transfer, 270, 107684 (2021).

F. Zhou, Y. Bao, R. Madugani, D. A. Long, J. J. Gorman,* and T. W. LeBrun,* “Broadband thermomechanically limited sensing with an optomechanical accelerometer,” Optica, 8, 350

D. A. Long,* B. J. Reschovsky, F. Zhou, Y. Bao, T. W. LeBrun, and J. J. Gorman,* “Electro-optic frequency combs for rapid interrogation in cavity optomechanics,” Opt. Lett., 46, 645 (2021).

E. M. Adkins,* D. A. Long,* J. T. Hodges, “Air-broadening in near-infrared carbon dioxide line shapes: quantifying contributions from O2, N2, and Ar,” J. Quant. Spectrosc. Radiat. Transfer, 270, 107669 (2021).

E. M. Adkins,* D. A. Long,* A. J. Fleisher, and J. T. Hodges, “Near-infrared cavity ring-down spectroscopy measurements of nitrous oxide in the (4200)←(0000) and (5000)←(0000) bands,” J. Quant. Spectrosc. Radiat. Transfer, 262, 107527 (2021).

V. H. Payne, et al., “Absorption coefficient (ABSCO) tables for the Orbiting Carbon Observatories: Version 5.1,” J. Quant. Spectroc. Radiat. Transfer, 255, 107217 (2020).

Z. D. Reed, D. A. Long, H. Fleurbaey, J. T. Hodges, “SI-traceable molecular transition frequency measurements at the 10-12 relative uncertain level,” Optica, 7, 1209 (2020).

D. A. Long,* Z. D. Reed,* A. J. Fleisher, J. Mendonca, S. Roche, J. T. Hodges, “High accuracy near-infrared carbon dioxide intensity measurements to support remote sensing,” Geophys. Res. Lett., 47, e2019GL086344 (2020).

D. A. Long,* B. J. Reschovsky, “Electro-optic frequency combs generated via direct digital synthesis applied to sub-Doppler spectroscopy,”

A. J. Fleisher,* E. M. Adkins, Z. D. Reed, H. Yi, D. A. Long, H. M. Fleurbaey, J. T. Hodges,* “Twenty-five-fold reduction in measurement uncertainty for a molecular line intensity,” Phys. Rev. Lett., 123, 043001 (2019).

J. Mendonca,* K. Strong, D. Wunch, G. C. Toon, D. A. Long, J. T. Hodges, V. T. Sironneau, and J. E. Franklin, “Using a speed-dependent Voigt line shape to retrieve O2 from Total Carbon Column Observing Network solar spectra to improve measurements of XCO2,” Atmos. Meas. Tech., 12, 35 (2019).

A. J. Fleisher,* D. A. Long, J. T. Hodges, “Quantitative modeling of complex molecular response in coherent cavity-enhanced dual-comb spectroscopy,” J. Mol. Spectrosc., 352, 26 (2018).

A. J. Fleisher,* D. A. Long,* Q. Liu, L. Gameson, J. T. Hodges, “Optical measurement of radiocarbon below unity fraction modern by linear absorption spectroscopy,” J. Phys. Chem. Lett., 8, 4550 (2017). Featured as an Editor’s Choice, in Chemical &

D. A. Long,* A. J. Fleisher, D. F. Plusquellic, J. T. Hodges, “Electromagnetically induced transparency in vacuum and buffer gas potassium cells probed via electro-optic frequency combs,” Opt. Lett., 42, 4430 (2017).

D. A. Long,* et al., “Multiplexed sub-Doppler spectroscopy with an optical frequency comb,” Phys. Rev. A 94, 061801(R) (2016).

A. J. Fleisher,* D. A. Long,* Z. D. Reed, J. T. Hodges, D. F. Plusquellic, “Coherent cavity-enhanced dual-comb spectroscopy,” Opt. Expr., 24, 10424 (2016).

A. J. Fleisher,* D. A. Long, Q. Liu, J. T. Hodges, “Precision interferometric measurements of mirror birefringence in high-finesse optical resonators,” Phys. Rev. A, 93, 013833 (2016).

D. A. Long,* A. J. Fleisher,* Q. Liu, J. T. Hodges, “Mid-infrared molecular spectroscopy in the quantum noise limit,” Opt. Lett., 41, 1612 (2016).

D. A. Long,* S. Wojtewicz, 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, 161, 35 (2015).

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, 174301 (2014).

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, 2688 (2014).

D. A. Long,* A. J. Fleisher, S. Wojtewicz, J. T. Hodges, “Quantum-noise-limited cavity ring-down spectroscopy,” Appl Phys. B, 115, 149 (2014).

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, 2696 (2013).

D. A. Long, S. Wójtewicz, and J. T. Hodges,* “Effects of incomplete light extinction in frequency-agile, rapid scanning spectroscopy,” Proc. SPIE, 8726O (2013).

L. S. Rothman,* et al., “The HITRAN 2012 Molecular Spectroscopic Database,” J. Quant. Spectrosc. Radiat. Transfer, 130, 4 (2013).

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, 112 (2013).

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, 489 (2014).

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, 094201 (2013). 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, 532 (2013).

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, 2604 (2013).

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, 014307 (2012).

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.

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, D12309 (2012).

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, 4069 (2012).

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, 471 (2011).

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, 2527 (2011).

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

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, 2021 (2010).

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, 064502 (2010).

D. J. Robichaud, L. Y. Yeung, D. A. Long, et al.,,* “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, 13089 (2009).

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, 49 (2009).

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, 042513 (2009).

L. Chodroff, T. M. O’Neal, D. A. Long, and S. Hemkin,* “An education approach to computationally modeling dynamical systems,” J. Chem. Ed., 86, 1072 (2009).

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, 340 (2007).

D. A. Long, K. Unal, R. C. Pratt, M. Malkoch,* and J. Frommer,* “Localized ‘click’ chemistry through dip-pen nanolithography,” Adv. Mater., 19, 4471 (2007).

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, 8574 (2006).

R. C. Pratt, B. G. G. Lohmeijer, D. A. Long, et al., “Exploration, optimization, and application of supramolecular thiourea-amine catalysts for the synthesis of lactide (co)polymers,”

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, 4556 (2006).

M. Hunsen,* D. A. Long, C. R. D’Ardenne, and A. L. Smith, “Mild one-pot preparation of glycosyl bromides,” Carbohydr. Res., 340, 2670 (2005).

D. A. Long and J. B. Anderson,* “Bond-based corrections to semi-empirical and ab initio electronic structure calculations,” Chem. Phys. Lett., 402, 524 (2005).

(Note: * Denotes corresponding author)