Compare Model Drawings, CAD & Specs Primary Wavelength Region Wavelength of Maximum Efficiency Size Grooves per mm Type Availability Price
$109
In Stock
33009FL01-200H 190 to 800 nm 250 nm 25 x 25 mm 1201.6 Holographic
In Stock
$109
$109
In Stock
33009FL01-210H 300 to 1200 nm 450 nm 25 x 25 mm 1200 Holographic
In Stock
$109
$109
In Stock
33009FL01-220H 400 to 1200 nm 700 nm 25 x 25 mm 1200 Holographic
In Stock
$109
$109
In Stock
33009FL01-300H 190 to 900 nm 250 nm 25 x 25 mm 1800 Holographic
In Stock
$109
$109
In Stock
33009FL01-310H 200 to 900 nm 300 nm 25 x 25 mm 1800 Holographic
In Stock
$109
$109
In Stock
33009FL01-320H 250 to 900 nm 450 nm 25 x 25 mm 1800 Holographic
In Stock
$109
$109
In Stock
33009FL01-410H 150 to 800 nm 250 nm 25 x 25 mm 2400 Holographic
In Stock
$109
$109
In Stock
33009FL01-420H 200 to 800 nm 270 nm 25 x 25 mm 2400 Holographic
In Stock
$109
$109
In Stock
33009FL01-430H 250 to 800 nm 300 nm 25 x 25 mm 2400 Holographic
In Stock
$109
$109
In Stock
33009FL01-510H 130 to 500 nm 200 nm 25 x 25 mm 3600 Holographic
In Stock
$109
$189
In Stock
33010FL01-200H 190 to 800 nm 250 nm 50 x 50 mm 1201.6 Holographic
In Stock
$189
$189
In Stock
33010FL01-210H 300 to 1200 nm 450 nm 50 x 50 mm 1200 Holographic
In Stock
$189
$189
In Stock
33010FL01-220H 400 to 1200 nm 700 nm 50 x 50 mm 1200 Holographic
In Stock
$189
$189
In Stock
33010FL01-300H 190 to 900 nm 250 nm 50 x 50 mm 1800 Holographic
In Stock
$189
$189
In Stock
33010FL01-310H 200 to 900 nm 300 nm 50 x 50 mm 1800 Holographic
In Stock
$189
$189
In Stock
33010FL01-320H 250 to 900 nm 450 nm 50 x 50 mm 1800 Holographic
In Stock
$189
$189
In Stock
33010FL01-410H 150 to 800 nm 250 nm 50 x 50 mm 2400 Holographic
In Stock
$189
$189
In Stock
33010FL01-420H 200 to 800 nm 270 nm 50 x 50 mm 2400 Holographic
In Stock
$189
$189
In Stock
33010FL01-430H 250 to 800 nm 300 nm 50 x 50 mm 2400 Holographic
In Stock
$189
$189
In Stock
33010FL01-510H 130 to 500 nm 200 nm 50 x 50 mm 3600 Holographic
In Stock
$189
$69
In Stock
33025FL01-200H 190 to 800 nm 250 nm 12.5 x 12.5 mm 1201.6 Holographic
In Stock
$69
$69
In Stock
33025FL01-210H 300 to 1200 nm 450 nm 12.5 x 12.5 mm 1200 Holographic
In Stock
$69
$69
In Stock
33025FL01-220H 400 to 1200 nm 700 nm 12.5 x 12.5 mm 1200 Holographic
In Stock
$69
$69
In Stock
33025FL01-300H 190 to 900 nm 250 nm 12.5 x 12.5 mm 1800 Holographic
In Stock
$69
$69
In Stock
33025FL01-310H 200 to 900 nm 300 nm 12.5 x 12.5 mm 1800 Holographic
In Stock
$69
$69
In Stock
33025FL01-320H 250 to 900 nm 450 nm 12.5 x 12.5 mm 1800 Holographic
In Stock
$69
$69
In Stock
33025FL01-410H 150 to 800 nm 250 nm 12.5 x 12.5 mm 2400 Holographic
In Stock
$69
$69
In Stock
33025FL01-420H 200 to 800 nm 270 nm 12.5 x 12.5 mm 2400 Holographic
In Stock
$69
$69
In Stock
33025FL01-430H 250 to 800 nm 300 nm 12.5 x 12.5 mm 2400 Holographic
In Stock
$69
$69
In Stock
33025FL01-510H 130 to 500 nm 200 nm 12.5 x 12.5 mm 3600 Holographic
In Stock
$69
$89
In Stock
33066FL01-200H 190 to 800 nm 250 nm 12.5 x 25 mm 1201.6 Holographic
In Stock
$89
$89
In Stock
33066FL01-210H 300 to 1200 nm 450 nm 12.5 x 25 mm 1200 Holographic
In Stock
$89
$89
In Stock
33066FL01-220H 400 to 1200 nm 700 nm 12.5 x 25 mm 1200 Holographic
In Stock
$89
$89
In Stock
33066FL01-300H 190 to 900 nm 250 nm 12.5 x 25 mm 1800 Holographic
In Stock
$89
$89
In Stock
33066FL01-310H 200 to 900 nm 300 nm 12.5 x 25 mm 1800 Holographic
In Stock
$89
$89
In Stock
33066FL01-320H 250 to 900 nm 450 nm 12.5 x 25 mm 1800 Holographic
In Stock
$89
$89
In Stock
33066FL01-410H 150 to 800 nm 250 nm 12.5 x 25 mm 2400 Holographic
In Stock
$89
$89
In Stock
33066FL01-420H 200 to 800 nm 270 nm 12.5 x 25 mm 2400 Holographic
In Stock
$89
$89
In Stock
33066FL01-430H 250 to 800 nm 300 nm 12.5 x 25 mm 2400 Holographic
In Stock
$89
$89
In Stock
33066FL01-510H 130 to 500 nm 200 nm 12.5 x 25 mm 3600 Holographic
In Stock
$89
$159
In Stock
33067FL01-200H 190 to 800 nm 250 nm 25 x 50 mm 1201.6 Holographic
In Stock
$159
$159
In Stock
33067FL01-210H 300 to 1200 nm 450 nm 25 x 50 mm 1200 Holographic
In Stock
$159
$159
In Stock
33067FL01-220H 400 to 1200 nm 700 nm 25 x 50 mm 1200 Holographic
In Stock
$159
$159
In Stock
33067FL01-300H 190 to 900 nm 250 nm 25 x 50 mm 1800 Holographic
In Stock
$159
$159
In Stock
33067FL01-310H 200 to 900 nm 300 nm 25 x 50 mm 1800 Holographic
In Stock
$159
$159
In Stock
33067FL01-320H 250 to 900 nm 450 nm 25 x 50 mm 1800 Holographic
In Stock
$159
$159
In Stock
33067FL01-410H 150 to 800 nm 250 nm 25 x 50 mm 2400 Holographic
In Stock
$159
$159
In Stock
33067FL01-420H 200 to 800 nm 270 nm 25 x 50 mm 2400 Holographic
In Stock
$159
$159
In Stock
33067FL01-430H 250 to 800 nm 300 nm 25 x 50 mm 2400 Holographic
In Stock
$159
$159
In Stock
33067FL01-510H 130 to 500 nm 200 nm 25 x 50 mm 3600 Holographic
In Stock
$159

Features

Blazed Holographic Grating Construction

Holographic diffraction gratings typically have a sinusoidal surface profile generated optically by recording an interference pattern onto a photoresist-coated substrate. The photoresist is then coated with a vacuum deposited metal layer to produce a master grating, which may be used as a mold to produce replicated gratings. The final product typically consists of a substrate, a resin bonding layer, a patterned metal reflective layer, and a protective over coating. Holographic blazed gratings are generated by bombarding a holographically produced master with an angled beam of ions to etch the sinusoidal surface profile into a symmetric triangular profile. Holographic gratings are ideal for use in spectroscopy systems requiring very high resolution.

Plane Holographic Reflection Grating, 1800 g/mm, high modulation, 350-900 nm recommended spectral range, aluminum coating

Diffraction Efficiency and Polarization Effects

Holographic diffraction gratings can have very high diffraction efficiency, even above that of flat aluminum reflectors, at the design wavelengths and orientation. Diffraction efficiency is highly dependent on polarization state. Planar holographic gratings typically feature narrower spectral bandwidth, and have their peak efficiency at a shorter wavelength for P-polarization compared to S-polarization. For laser cavity applications this property may be used to feed back light from a specifically chosen wavelength and polarization state back into the laser gain medium to control the output of the laser. Conversely, applications such as spectrometers designed to operate using unpolarized light may require the use two gratings in conjunction with a polarizing beamsplitter to obtain optimum results.

Ultrafast Pulse Amplification

Pairs of identical diffraction gratings that are tuned to the polarization and output wavelengths of a laser may be used to temporally compress ultrafast laser pulses, greatly increasing the peak power. When a spectrally broad laser pulse is incident on a diffraction grating, the various wavelength components will disperse, or diffract in different directions. If this pulse has its wavelength chirped (i.e. its frequency progressively increases during the length of the pulse) the first grating will diffract the leading portion of the pulse (consisting of longer wavelengths) at a greater angle compared to the trailing portion of the pulse (consisting of shorter wavelengths). When the light reaches the second grating with same periodicity the dispersion will be reversed from symmetry and the light will be collimated. Light from the leading edge of the pulse will travel a longer optical path through the pair of gratings, requiring more travel time. If the separation between the gratings is chosen so that the travel time difference matches the pulse duration, the laser power will be compressed into a nearly instantaneous pulse.

Optimum Grating Orientation

Like their ruled counterparts, holographic gratings are most efficient when used in the Littrow configuration, or aligned so that the diffraction angle of the dominant diffraction order is coincident with the input beam, effectively behaving as a retroreflector at a specific wavelength. This geometry is especially useful for applications using a diffraction grating inside a laser cavity to select a particular wavelength. Only the exact chosen wavelength will reflect into the laser cavity. Holographic gratings are particularly useful because they have peak efficiency only at a particular polarization, allowing them to be used as a substitute for a Brewster window to control the laser output polarization.

Handling Diffraction Gratings

Holographic gratings are patterned surface relief gratings, the surface cannot be touched with without damaging the fringe pattern and potentially seriously degrading the optical performance. Damage to the grating can take the form of contamination or distortion of the microscopic groove profile. Damage to this microscopic groove profile is, unfortunately, irreversible. The resin layer like modeling clay, will retain a permanent imprint. Contamination with finger oils, moisture, etc. is also often permanent. Because of the sensitive nature of the grating groove profile, it is imperative that the user take precautions in handling gratings. Do not touch the surface of the grating; handle the grating by the edges and always wear gloves or finger cots. Use a non-contact cleaning method such as dry, compressed air or a dust bulb to remove excess dust from a grating.

Float Glass Substrate

Float glass is made by floating molten glass over a bed of molten metal. While this is a low cost material that is used in commercial windows, the production method yields a very flat surface of uniform thickness making it a good choice for optics.

Special Orders

In addition to the gratings listed here, special order gratings may also be available for use in a wide variety of applications including OEM. Custom grating requests include gold coating for increased IR efficiency, AlMgF2 coating for increased UV efficiency and many other requests. Gratings may be installed into a variety of mounts for use in specific monochromators or spectrographs. Contact Newport's Richardson Gratings for more information.