Standoff Detection via Single-Beam Spectral Notch Filtered Pulses

We demonstrate single-beam coherent anti-Stokes Raman spectroscopy (CARS), for detecting and identifying traces of solids, including minute amounts of explosives, from a standoff distance (>50 m) using intense femtosecond pulses. Until now, single-beam CARS methods relied on pulse-shapers in order to obtain vibrational spectra. Here we present a simple and easy-to-implement detection scheme, using a commercially available notch filter, that does not require the use of a pulse-shaper.

[1]  Marcos Dantus,et al.  Coherent mode-selective Raman excitation towards standoff detection. , 2008, Optics express.

[2]  X. Xie,et al.  Living Cells as Test Tubes , 2006, Science.

[3]  Yaron Silberberg,et al.  Single-pulse phase-contrast nonlinear Raman spectroscopy. , 2002, Physical review letters.

[4]  Dobryna Zalvidea,et al.  Nonlinear immunofluorescent assay for androgenic hormones based on resonant structures. , 2008, Optics express.

[5]  Andrew G. Glen,et al.  APPL , 2001 .

[6]  Y. Silberberg,et al.  Standoff Detection of Solid Traces by Single-Beam Nonlinear Raman Spectroscopy Using Shaped Femtosecond Pulses , 2008 .

[7]  All-optical processing in coherent nonlinear spectroscopy , 2004 .

[8]  Jane A Dickerson,et al.  Coherent anti-stokes Raman scattering microscopy: chemical imaging for biology and medicine. , 2008, Annual review of analytical chemistry.

[9]  M. Morris,et al.  Infrared and Raman Spectroscopy , 2000 .

[10]  Yaron Silberberg,et al.  Single-pulse coherently controlled nonlinear Raman spectroscopy and microscopy , 2002, Nature.

[11]  Yaron Silberberg,et al.  Single-beam coherent Raman spectroscopy and microscopy via spectral notch shaping. , 2010, Optics express.

[12]  Miss A.O. Penney.  (b) , 1974, The New Yale Book of Quotations.

[13]  Stephen R. Leone,et al.  Fourier transform spectral interferometric coherent anti-Stokes Raman scattering (FTSI-CARS) spectroscopy , 2007 .

[14]  Marlan O Scully,et al.  Standoff spectroscopy via remote generation of a backward-propagating laser beam , 2011, Proceedings of the National Academy of Sciences.

[15]  Andreas Volkmer,et al.  Vibrational imaging and microspectroscopies based on coherent anti-Stokes Raman scattering microscopy , 2005 .

[16]  Marcus Motzkus,et al.  Heterodyne single-beam CARS microscopy , 2009 .

[17]  Marlan O Scully,et al.  Optimizing the Laser-Pulse Configuration for Coherent Raman Spectroscopy , 2007, Science.

[18]  A. Pettersson,et al.  Laser-based standoff detection of explosives: a critical review , 2009, Analytical and bioanalytical chemistry.

[19]  Richard E. Whipple,et al.  Standoff Detection of High Explosive Materials at 50 Meters in Ambient Light Conditions Using a Small Raman Instrument , 2005, Applied spectroscopy.

[20]  Marshall T. Bremer,et al.  Highly selective standoff detection and imaging of trace chemicals in a complex background using single-beam coherent anti-Stokes Raman scattering , 2011 .

[21]  Marlan O Scully,et al.  Single-shot detection of bacterial endospores via coherent Raman spectroscopy , 2007, Proceedings of the National Academy of Sciences.

[22]  S. Rosenwaks,et al.  Detection of particles of explosives via backward coherent anti-Stokes Raman spectroscopy , 2008 .