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Original question:

DLP9000XUV: DMD for 325nm Laser Source

DLP9000XUV: Availiability for using UV laser 349nm

Taeseung Hwang
Prodigy 20 points
Part Number: DLP9000XUV

Hi all,

We are planning to use the DLP9000XUV with UV laser (wl: 349nm, power: 150mW(max), 15mW(min)). The recommended illumination power (Total combined <353nm: 10mW/cm^2) was much smaller than our power density(9.65 ~ 96.5mW/cm^2). Related to the power issue, I have several questions below.

1. If we use a 349nm laser source, what would happen on DMD? (e.g., Intensity drop due to the anti-reflection coating degradation)

2. What is the "Total combined < 353nm" mean? I am still confusing whether the maximum illumination power of singe-wavelength (<353nm) can be higher than 10mW/cm^2 or not.

3. Where can I get the optical properties(e.g., Reflectance, Absorbance spectrum) of mirror and anti-reflection coating?

4. I'd like to get your opinion about using 349nm as our laser source with DLP9000XUV.

Please let me know if you have any questions or need further information to answer my questions! Thank you!

Best,

Taeseung

  • 0
    TI__Expert 5200 points

    Hi again Taeseung,

    May I ask what your application is? You may send me a connection (friend) request on E2E if you do not want to reveal what it is on a public forum.

    I will be able to take a look at this question in more detail next week and pull in some colleagues from the optics and thermal team for assistance.

    For now, though, I would not use a 349 nm wavelength with the DLP9000XUV, as that is below the minimum specification of supported wavelengths for this DMD. This DMD supports 355 nm to 420 nm wavelength.

    This thread will be kept open, as your questions are still valid.

    Regards,
    Michael Ly

    P.S. I will be away from the office April 24-29 if this thread goes on beyond the 23rd. I just want to let you know as courtesy.

  • 0 in reply to Michael Ly
    Prodigy 20 points

    Hi Michael!

    I appreciate your help and reply. I sent a friend request and message to talk more about it! 

    Best,

    Taeseung

  • 0 in reply to Taeseung Hwang
    TI__Expert 5200 points

    Hi Taesung,

    I am sorry for the late reply. Thanks for the request. Let me start looking into this as we talk offline!