Novus Light: Choosing Lasers for Holographic Applications

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See our article in Novus Light on Choosing Lasers for Holographic Applications.

Tunable CW single frequency, laser sources based on frequency converted OPO technology have more recently become an available option with long coherence length suitable for writing holograms and HOEs. The unique design means that any wavelength in the range 450 nm – 650 nm (however, there is degeneracy at the pump wavelength) can be accessed from a single laser unit with powers up to half watt level. The flexibility in wavelength selection that this offers can allow for complete customization of the writing wavelength, making the hologram more difficult to copy and thus extremely attractive for security-based applications.

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