Is it possible to use LED source for Raman spectrscopy purposes in Deep UV region? What are the pros and cons?

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Michael Schmitt

I guess you will not find a LED (normally > 365 nm UVA) in deep UV region with significant output and nearly all samples will be excited. I suggest using a low pressure Hg light source or Excimer irradiation.

https://www.intl-lighttech.com/products/light-sources/leds/uv-leds

https://books.google.fr/books?id=V5UEhgH3770C&pg=PA134&lpg=PA134&dq=HG+248+nm+mW/cm2&source=bl&ots=GT6C_EvApO&sig=7eX29my-1IMnqVrZYh1v_5kD92U&hl=de&sa=X&ved=0ahUKEwjrjO_4gr7VAhXGLhoKHUHpBw8Q6AEILTAB#v=onepage&q=HG%20248%20nm%20mW%2Fcm2&f=false

John D. Bullough

I have no first hand experience with LEDs that purport to generate UV-C (200-280 nm) radiation, but there are some:

https://www.aquisense.com/technology

http://www.cisuvc.com/products/klaran

http://www.ledsmagazine.com/ugc/2014/10/06/lg-innotek-introduces-uv-leds-with-worldclass-power-performance.html

Whether they produce sufficient radiation for your application, I cannot say.

Sevan Menachekanian

THANK YOU MICHEAL AND JOHN FOR YOUR RESPONSES.