• High Throughput
• Unsurpassed Imaging
• Excellent Stability
• Volume Transmission Grating

Key Advantages of HoloSpec™ Spectrograph over Czerny-Turner Spectrographs

The axial-transmissive design of the HoloSpec spectrograph results in the following advantages over traditional Czerny-Turner spectrographs:

High Spatial Resolution
The optics employed in the HoloSpec™ spectrograph achieve thorough aberration correction across a large field along both the slit axis and the wavelength axis. This feature makes the HoloSpec™ spectrograph ideal for applications involving one-dimensional spectral imaging or simultaneous monitoring of many different spectra.

Unsurpassed Image Quality

HoloSpec ƒ/1.8i Image Data graphically illustrating the superior image quality acheivable by the HoloSpec ƒ/1.8i over the entire area of a commonly used CCD camera.

Typical 0.25 m Czerny-Turner Spectrograph Graphs are image cross-sections of a 250 line/inch Ronchi ruling taken at the edge of a 26 mm x 6.7 mm CCD having 23 micron pixels, illuminated at 543.5 nm.

High Throughput
The HoloSpec™ spectrograph operate at aperture ratios as fast as ƒ/1.8, providing several times the light throughput of even the fastest Czerny-Turner spectrographs.

Compact
The footprint of the HoloSpec™ spectrograph is less than one-half or one-quarter that of typical quarter-meter or half-meter Czerny-Turner spectrographs.

Robust
The axial-transmissive configuration of the HoloSpec spectrograph, which uses no moving optics, provides a robust package with stable calibration ideal for process environments. The HoloSpec™ spectrograph is mountable in any orientation.

Easy to Use
The HoloSpec™ spectrograph include adjustments controlling focus and camera tilt, and mounts designed to facilitate switching among different input sources, gratings, and slits.

Spectral Range
The HoloSpec™ spectrograph can operate over the spectral range 425-nm to 900-nm when equipped with the appropriate gratings.

Gratings for Different Spectral Coverage
Gratings to provide spectral windows with widths of 75 to 400 nm on a 26-nm detector are available. Gratings are provided on pre-aligned base plates that can be easily exchanged.

HoloSpec™ Accessories

Various accessories are available for the HoloSpec™ spectrograph, including:

• Entrance Slits
  Kaiser offers the following fixed width slits for the HoloSpec™. Slits are easily exchanged using a quick exchange mount .

• Broadband Gratings
  The following Broadband gratings are available at our Ann Arbor facility. Kaiser designs and manufactures custom gratings. Contact us directly to discuss your needs if you do not see a grating that meets your requirements.

• Raman Gratings
  Kaiser offers the following gratings for Raman spectroscopy applications. Kaiser designs and manufactures custom gratings. Contact us directly to discuss your needs if you do not see a grating that meets your requirements.

• High Dispersion Gratings
  Kaiser Manufactures High Dispersion Gratings(HDGs) for Raman and plasma applications. A single HDG can cover up to 1000 cm-1 using 532 nm excitation and a 1024 x 256 (26 micron pixel) CCD chip. Coverage is exciation wavelength dependant and each grating is specific for a single excitation wavelength. A 532 nm HDG yields 1000 cm-1 of spectral coverage. At 785 nm HDG grating yields 700 cm-1 of spectral coverage. The center wavelength of the HDG may be selected by the cutomer. The customer can specify either the center wavelength of the HDG grating or the approximate spectral coverage. Contact us directly regarding custom High Dispersion Gratings to meet your requirements.

• Various input adapters
  Kaiser offers a number of standard input adapters.