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Looking for DLP to be used with 325nm laser

Radhika Poduval
Prodigy 10 points
Other Parts Discussed in Thread: DLP7000UV

Hello,

My research group is building a UV direct laser writing lithography system using 325nm laser, and we are looking for DMD arrays or spatial light modulator systems (eg.  DLP 7000UV from TI). The lowest specified wavelength for the DLPs on the TI website seems to be 363nm. Is that just the lower limit at whch the product was characterised or is there any other specific reason why it cannot/should not be used for lower wavelengths?

I would really appreciate information on TI products in the ALM category which may be used for spatial light modulation with 325nm lasers.

Alternatively, are there any possible customisation options available with the existing products, so tenable use with 325nm UV laser ?


Thank you

Best Regards

Radhika

  • 0
    TI__Mastermind 30600 points
    Radhika,

    Welcome to the DLP forums and thank you for your question!!

    The lowest wavelength that we specify is the lowest that we've characterized the device for. In the case of the DLP7000UV, you'll see that we provide a maximum power at those wavelengths (2mW/cm^2 for less than 363nm).

    This constraint must be observed or you will risk damaging the device - there is a proprietary material inside the DMD which can be impacted by those wavelengths and could reduce the lifetime or change the operation of the device. The wavelength range is also a function of the window that is put over the DMD.

    Right now we don't have any devices which are capable of 325nm unfortunately and there aren't any customization options due to the way that the DMDs are manufactured.

    Please let me know if there is anything else you need.
    Paul