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Deuteron-triton (DT) fusion is the primary fusion reaction used in controlledfusion research, mainly for its relatively high reaction cross sectionscompared to other fusion options. Even so, to attain appreciable reactionprobabilities very high temperatures (on the order of 10-100 million kelvins)are required, which are extremely challenging to achieve and maintain. We showthat intense low-frequency laser fields, such as those in the near-infraredregime for the majority of intense laser facilities around the world, arehighly effective in transferring energy to the DT system and enhancing the DTfusion probabilities. The fusion probabilities are shown to be enhanced by atleast an order of magnitude in 800-nm laser fields with intensities on theorder of 10$^{21}$ W/cm$^2$. The demanding temperature requirement ofcontrolled nuclear fusion may be relaxed if intense low-frequency lasers areexploited.

Substantially enhanced deuteron-triton fusion probabilities in intense low-frequency laser fields