Dr. David J. Erskine Profile

Dr. David J. Erskine

Retired

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 29 August 2022 Poster

Spectrograph stabilization of 500x using a single-delay interferometer

David Erskine, Edward Wishnow, Eric Linder, Erik Davies, Martin Sirk, Richard Ozer, Dayne Fratanduono, Jerry Edelstein

Proceedings Volume 12184, (2022) https://doi.org/10.1117/12.2628388

KEYWORDS: Interferometers, Spectrographs, Doppler effect, Velocimetry, Spectroscopy, Sensors, Planets, Optical resolution, Near infrared, Moire patterns

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Proceedings Article | 29 August 2022 Poster

Externally dispersed interferometer testbed diagnosing Keck Planet Finder spectrograph high resolution performance

David Erskine, Jerry Edelstein, Edward Wishnow, Erik Davies, Martin Sirk, Richard Ozer, Dayne Fratanduono

Proceedings Volume 12184, (2022) https://doi.org/10.1117/12.2627160

KEYWORDS: Interferometers, Spectrographs, Doppler effect, Velocimetry, Spatial frequencies, Signal detection, Signal analyzers, Planets, Lamps, Fringe analysis

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SPIE Journal Paper | 10 June 2021 Open Access

Method for boosting dispersive spectrograph stability 1000× using interferometry with crossfaded pairs of delays

David Erskine

JATIS, Vol. 7, Issue 02, 025006, (June 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.2.025006

KEYWORDS: Spectrographs, Interferometers, Interferometry, Mirrors, Wavelets, Doppler effect, Sensors, Fourier transforms, Lamps, Fabry–Perot interferometers

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Proceedings Article | 13 December 2020 Presentation + Paper

Boosting dispersive spectrograph stability 1000x using an interferometer with crossfaded delays

David Erskine

Proceedings Volume 11451, 114512D (2020) https://doi.org/10.1117/12.2559219

KEYWORDS: Interferometers, Spectrographs, Sensors, Point spread functions, Astronomy, Exoplanets, Signal detection, Mirrors, Heterodyning, Moire patterns

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Proceedings Article | 6 July 2018 Paper

Enhanced exoplanet biosignature detection from an interferometer addition to low resolution spectrographs

David Erskine, Philip Muirhead, Andrew Vanderburg, Andrew Szentgyorgyi

Proceedings Volume 10702, 107024G (2018) https://doi.org/10.1117/12.2303586

KEYWORDS: Interferometers, Spectrographs, Exoplanets, Moire patterns, Molecules, Doppler effect, Image resolution, Fourier transforms, Spectral resolution

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SPIE Journal Paper | 2 December 2016 Open Access

High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: part 2, photon noise theory

David Erskine, Jerry Edelstein, Edward Wishnow, Martin Sirk, Philip Muirhead, Matthew Muterspaugh, James Lloyd

JATIS, Vol. 2, Issue 04, 045001, (December 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.4.045001

KEYWORDS: Signal to noise ratio, Spectrographs, Interference (communication), Interferometry, Point spread functions, Interferometers, Spectroscopes, Sensors, Image resolution, Fourier transforms

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High-resolution broadband spectroscopy at near-infrared (NIR) wavelengths (950 to 2450 nm) has been performed using externally dispersed interferometry (EDI) at the Hale telescope at Mt. Palomar, with the TEDI interferometer mounted within the central hole of the 200-in. primary mirror in series with the comounted TripleSpec NIR echelle spectrograph. These are the first multidelay EDI demonstrations on starlight. We demonstrated very high (10×) resolution boost and dramatic (20× or more) robustness to point spread function wavelength drifts in the native spectrograph. Data analysis, results, and instrument noise are described in a companion paper (part 1). This part 2 describes theoretical photon limited and readout noise limited behaviors, using simulated spectra and instrument model with noise added at the detector. We show that a single interferometer delay can be used to reduce the high frequency noise at the original resolution (1× boost case), and that except for delays much smaller than the native response peak half width, the fringing and nonfringing noises act uncorrelated and add in quadrature. This is due to the frequency shifting of the noise due to the heterodyning effect. We find a sum rule for the noise variance for multiple delays. The multiple delay EDI using a Gaussian distribution of exposure times has noise-to-signal ratio for photon-limited noise similar to a classical spectrograph with reduced slitwidth and reduced flux, proportional to the square root of resolution boost achieved, but without the focal spot limitation and pixel spacing Nyquist limitations. At low boost (∼1×) EDI has ∼1.4× smaller noise than conventional, and at >10× boost, EDI has ∼1.4× larger noise than conventional. Readout noise is minimized by the use of three or four steps instead of 10 of TEDI. Net noise grows as step phases change from symmetrical arrangement with wavenumber across the band. For three (or four) steps, we calculate a multiplicative bandwidth of 1.8:1 (2.3:1), sufficient to handle the visible band (400 to 700 nm, 1.8:1) and most of TripleSpec (2.6:1).

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Proceedings Article | 9 August 2016 Paper

Dramatic robustness of a multiple delay dispersed interferometer to spectrograph errors: how mixing delays reduces or cancels wavelength drift

David Erskine, E. Linder, E. Wishnow, J. Edelstein, M. Sirk, P. Muirhead, J. Lloyd, A. Kim

Proceedings Volume 9908, 99085Y (2016) https://doi.org/10.1117/12.2230182

KEYWORDS: Spectrographs, Interferometers, Doppler effect, Point spread functions, Moire patterns, Fabry–Perot interferometers, Lamps, Sensors, Wavelets, Data modeling

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SPIE Journal Paper | 27 May 2016 Open Access

High-resolution broadband spectroscopy using externally dispersed interferometry at the Hale telescope: Part 1, data analysis and results

David Erskine, Jerry Edelstein, Edward Wishnow, Martin Sirk, Philip Muirhead, Matthew Muterspaugh, James Lloyd, Yuzo Ishikawa, Eliza McDonald, William Shourt, Andrew Vanderburg

JATIS, Vol. 2, Issue 02, 025004, (May 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.2.025004

KEYWORDS: Spectrographs, Point spread functions, Stars, Fabry–Perot interferometers, Interferometry, Spectroscopes, Interferometers, Lamps, Modulation transfer functions, Wavelets

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Proceedings Article | 8 July 2014 Paper

High resolution broad-band spectroscopy in the NIR using the Triplespec externally dispersed interferometer at the Hale telescope

David Erskine, J. Edelstein, M. Sirk, E. Wishnow, Y. Ishikawa, E. McDonald, W. Shourt

Proceedings Volume 9147, 914717 (2014) https://doi.org/10.1117/12.2055186

KEYWORDS: Spectrographs, Interferometers, Modulation transfer functions, Fabry–Perot interferometers, Stars, Spectroscopy, Spectral resolution, Fourier transforms, Doppler effect, Heterodyning

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Proceedings Article | 24 September 2012 Paper

Enhanced spectral resolution via externally dispersed interferometry

Jerry Edelstein, David Erskine, Martin Sirk, Andrew Vanderburg, Edward Wishnow

Proceedings Volume 8446, 84464J (2012) https://doi.org/10.1117/12.928290

KEYWORDS: Modulation transfer functions, Fabry–Perot interferometers, Spectroscopy, Spectrographs, Spectral resolution, Interferometry, Infrared telescopes, Interferometers, Fourier transforms, Data modeling

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Proceedings Article | 15 September 2011 Paper

Ten-fold spectral resolution boosting using TEDI at the Mt. Palomar NIR Triplespec spectrograph

David Erskine, J. Edelstein, P. Muirhead, M. Muterspaugh, K. Covey, D. Mondo, A. Vanderburg, P. Andelson, D. Kimber, M. Sirk, J. Lloyd

Proceedings Volume 8146, 81460M (2011) https://doi.org/10.1117/12.892664

KEYWORDS: Spectrographs, Interferometers, Modulation transfer functions, Intelligence systems, Fourier transforms, Spectral resolution, Data modeling, Interferometry, Doppler effect, Spectroscopy

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Proceedings Article | 21 July 2010 Paper

Infrared radial velocimetry with TEDI: performance development

Jerry Edelstein, Philip Muirhead, Jason Wright, Kevin Covey, David Erskine, Matthew Muterspaugh, James Lloyd, Samuel Halverson, Mario Marckwordt, Daniel Mondo

Proceedings Volume 7735, 773583 (2010) https://doi.org/10.1117/12.858312

KEYWORDS: Interferometers, Telescopes, Optical fibers, Spectrographs, Dispersion, Stars, Mirrors, Infrared radiation, Target acquisition, Interferometry

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Proceedings Article | 21 July 2010 Paper

Precise infrared radial velocimetry with the Triplespec Exoplanet Discovery Instrument: current performance and results

Philip Muirhead, Jerry Edelstein, Jason Wright, David Erskine, Matthew Muterspaugh, Kevin Covey, Mario Marckwordt, Samuel Halverson, Daniel Mondo, James Lloyd

Proceedings Volume 7735, 77357X (2010) https://doi.org/10.1117/12.857196

KEYWORDS: Interferometers, Stars, Doppler effect, Exoplanets, Spectrographs, Telescopes, Modulation, Krypton, Velocity measurements, Device simulation

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Proceedings Article | 9 July 2008 Paper

Dispersed interferometry for infrared exoplanet velocimetry

Jerry Edelstein, Matthew Muterspaugh, David Erskine, Mario Marckwordt, W. Michael Feuerstein, Tony Mercer, Agnieszka Czeszumska, Jaclyn Schwer, Sam Halverson, James Lloyd, Philip Muirhead, Jason Wright, Terry Herter

Proceedings Volume 7014, 70147F (2008) https://doi.org/10.1117/12.790315

KEYWORDS: Stars, Planets, Spectrographs, Interferometry, Exoplanets, Doppler effect, Velocity measurements, Velocimetry, Infrared radiation, Interferometers

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Proceedings Article | 4 October 2007 Paper

TEDI: the TripleSpec Exoplanet Discovery Instrument

Jerry Edelstein, Matthew Ward Muterspaugh, David Erskine, W. Michael Feuerstein, Mario Marckwordt, Ed Wishnow, James Lloyd, Terry Herter, Phillip Muirhead, George Gull, Charles Henderson, Stephen Parshley

Proceedings Volume 6693, 66930W (2007) https://doi.org/10.1117/12.735474

KEYWORDS: Spectrographs, Stars, Interferometers, Absorption, Telescopes, Doppler effect, Exoplanets, Planets, Calibration, Mirrors

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Proceedings Article | 30 June 2006 Paper

Noise studies of externally dispersed interferometry for Doppler velocimetry

David Erskine, Jerry Edelstein, James Lloyd, Philip Muirhead

Proceedings Volume 6269, 62692P (2006) https://doi.org/10.1117/12.670683

KEYWORDS: Doppler effect, Spectrographs, Interferometers, Signal to noise ratio, Velocimetry, Signal detection, Fourier transforms, Solids, Sensors, Heterodyning

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Proceedings Article | 28 June 2006 Paper

The TEDI instrument for near-IR radial velocity surveys

Jerry Edelstein, David Erskine, James Lloyd, Terry Herter, Mario Marckwordt, Michael Feuerstein

Proceedings Volume 6269, 62691E (2006) https://doi.org/10.1117/12.672014

KEYWORDS: Spectrographs, Interferometers, Doppler effect, Stars, Absorption, Planets, Interferometry, Telescopes, Velocimetry, Mirrors

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Proceedings Article | 15 September 2005 Paper

Externally dispersed interferometry for planetary studies

David Erskine, Jerry Edelstein, Daniel Harbeck, James Lloyd

Proceedings Volume 5905, 59050R (2005) https://doi.org/10.1117/12.617879

KEYWORDS: Spectrographs, Doppler effect, Interferometers, Stars, Planets, Absorption, Spectroscopy, Spatial frequencies, Interferometry, Signal detection

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Proceedings Article | 18 August 2005 Paper

High resolution absorption spectroscopy using externally dispersed interferometry

Jerry Edelstein, David Erskine

Proceedings Volume 5898, 589811 (2005) https://doi.org/10.1117/12.618061

KEYWORDS: Spectrographs, Interferometers, Sensors, Spectral resolution, Heterodyning, Absorption spectroscopy, Interferometry, Spectroscopes, Doppler effect, Absorption

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Proceedings Article | 17 March 2005 Paper

Heterodyning time resolution boosting for velocimetry and reflectivity measurements

David Erskine

Proceedings Volume 5580, (2005) https://doi.org/10.1117/12.582723

KEYWORDS: Signal detection, Heterodyning, Modulation, Sensors, Reflectivity, Streak cameras, Interferometers, Spectral resolution, Phase shift keying, Velocity measurements

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Proceedings Article | 30 September 2004 Paper

Interferometric resolution boosting for spectrographs

David Erskine, Jerry Edelstein

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.549947

KEYWORDS: Spectrographs, Interferometers, Spatial frequencies, Charge-coupled devices, Spectral resolution, Heterodyning, Glasses, Spectroscopy, Fourier transforms, Iodine

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Proceedings Article | 26 February 2003 Paper

Spectral astrometry mission for planets detection

David Erskine, Jerry Edelstein

Proceedings Volume 4852, (2003) https://doi.org/10.1117/12.460726

KEYWORDS: Stars, Planets, Interferometers, Interferometry, Telescopes, Sensors, Charge-coupled devices, Spectrographs, Spectroscopy, Iodine

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Proceedings Article | 24 February 2003 Paper

High-resolution broadband spectral interferometry

David Erskine, Jerry Edelstein

Proceedings Volume 4854, (2003) https://doi.org/10.1117/12.459791

KEYWORDS: Interferometers, Point spread functions, Spectrographs, Heterodyning, Charge-coupled devices, Spectroscopy, Fourier transforms, Interferometry, Doppler effect, Mirrors

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Proceedings Article | 28 May 1997 Paper

Imaging white-light VISAR

David Erskine, Neil Holmes

Proceedings Volume 2869, (1997) https://doi.org/10.1117/12.273416

KEYWORDS: Interferometers, Velocity measurements, Fabry–Perot interferometers, Mirrors, Cameras, Velocimetry, Spherical lenses, Michelson interferometers, Interferometry, Reflectors

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Showing 5 of 24 publications

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