Experimental study reveals prepulse contrast enhancement beyond 4.4 × 10⁻¹¹ in a Ti:sapphire laser, indicating a viable route to cleaner ultra-intense pulses.
By employing optical parametric chirped pulse amplification after a regenerative amplifier in a Ti:sapphire chirped pulse amplification system, we improved for the first time the prepulse contrast to be better than 4.4 × 10 -11 .
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Kiriyama et al. (2006) studied this question.
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