Headwall Photonics

Headwall Photonics spectroscopy spectrograph

Headwall Photonics is a truly unique technology venture that was founded in 2003 as the result of a management buy-out of Agilent Technologies' Holographic Grating Operation. Headwall is the world's leading high-volume manufacturer of original holographic diffraction gratings, optical modules, and fully integrated imaging instruments.

Continuing the rich engineering legacy of American Holographic (which was acquired by Agilent in 2000), Headwall offers its extensive worldwide base of customers a range of application-specific optical wavelength solutions. Markets include industrial inspection, defense and security, remote sensing, and biotechnology.

Website: http://www.headwallphotonics.com

Headwall Photonics spectroscopy spectrograph

Headwall Photonics spectroscopy spectrograph

HyperSpectral Imaging


Aberration-corrected imaging

Headwall's hyperspectral sensors are based on an all-reflective concentric technology using aberration-corrected gratings. Very high SNR, outstanding photometric accuracy, and exceptionally low stray light are key benefits of this technical approach. Robustness is achieved thanks to a design that uses no moving parts and diffraction gratings that are temperature insensitive.

Headwall is the only hyperspectral instrument manufacturer that also produces its own application-specific, all-original diffraction gratings. This state-of-the-art design eliminates chromatic aberration for excellent focus and resolution over the entire spectral range.

Headwall Photonics abberation corrected spectral imagers
Spectral Range

In addition to the spectral ranges below, Headwall manufactures hyperspectral sensors covering the midwave infrared (MWIR) and longwave infrared (LWIR). Contact us with your application details to get started!



SWIR, NIR, Extended VNIR, VNIR, VIS, UV






 

Headwall Photonics spectroscopy spectrograph

Headwall Photonics spectroscopy spectrograph

Raman Imaging

Headwall's Raman imaging instruments are exceptionally small, light, and rugged. Raman spectroscopy is typically used to observe vibrational, rotational, and other low-frequency modes in a system. It relies on inelastic (‘Raman’) scattering of monochromatic light from a laser in the visible, near infrared, or near ultraviolet range. The laser light interacts with molecular vibrations, resulting in the energy of the laser photons being shifted up or down. This shift in energy gives researchers information useful in various fields of chemistry and medicine, since vibrational information is specific to the chemical bonds and symmetry of molecules.

Headwall has developed two product families--Raman Explorer™ and Raman Discovery™—that are best in class for a wide range of high-performance applications.

Raman Explorer

Raman Explorer, designed for applications ranging from deep sea to deep space, provides high optical efficiency and throughput with a minimum of optical noise. High spatial resolution comes from a tall entrance slit that affords optimized signal collection with minimal image distortion and channel crosstalk. A very short focal length with f/2.4 optical throughput permits the instrument to be very compact. Explorer also has the ability to process separate calibration and radiometric reference channels.

EXCITATION WAVELENGTHS

    • 248nm
    • 532nm
    • 532nm/685nm dual excitation
    • 632.8nm
    • 785nm
    • 830nm
    • 1064nm

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Raman Discovery

Raman Discovery is an affordable, hand-held solution for Raman applications where multi-channel Raman imaging measurements are key differentiators. It is a very portable unit designed for harsh, mission-critical environments. High optical efficiency, high spectral and spatial resolution, and a large entrance aperture with minimal image distortion are key advantages of Raman Discovery.

EXCITATION WAVELENGTHS

    • 248nm
    • 532nm
    • 785nm

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Headwall Photonics spectroscopy spectrograph

Headwall Photonics spectroscopy spectrograph

Gratings for Multiple Applications


Headwall Photonics, Inc. has the history and leadership as a OEM supplier of original holographic diffraction gratings for multiple applications. Headwall's gratings include planar, aberration-corrected concave/convex, and Rowland Circle designs. Markets include telecommunications, spectroscopy, colorimetry, biomedical, and other analytical applications.

Headwall Photonics, Inc. has proven that the highest performance diffraction gratings cannot be manufactured with "replication" techniques, so we have continuously refined our process to deliver only "original" gratings, making Headwall the only company in the world that can make this statement.

The original grating manufacturing technique can accurately create the groove profiles necessary for high efficiency and low PDL. Other grating manufacturing techniques that involve replication cannot reproducibly create the subtle groove profiles required for high performance. The result of Headwall's original technology is efficiencies in excess of 90% on our High Efficiency / Low Loss designs and PDL as low as a few tenths of a dB on our LPDL designs.

The holographic original technique permits the recording of gratings on concave and convex surfaces. Headwall have pioneered the development of aberration-corrected concave gratings and continue to refine our designs to deliver the highest performance. We believe this technology will enable the future evolution of designs that are simpler and less expensive, without compromising performance.

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