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Diode-pumped polymeric dye lasers operating at a pump power level of
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We present a low-threshold vertical-cavity dye laser that is pumped by an InGaN laser diode. This vertical-cavity laser has a -thick poly--vinylcarbazole active layerdoped with coumarin 540A. The threshold pump power depended on the dye concentration and showed the minimum value of /pulse with the dye concentration of 4.0%. Single-mode laser action is attained at around and the output intensity decreases to half of the initial value after the emission of pulses. This concept helps to realize a highly compact dye laser that can be operated in the entire range of visible wavelengths.
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