Abstract:A powerful pulsed widely tunable infrared laser is described. Using the frequency red-shift provided by the stimulated Raman effect in high pressure gaseous hydrogen, the tunability of a Nd : YAG pumped dye laser has been converted down to the mid-infrared range by filtering the third Stokes wave coming out of a capillary Raman cell. Using different dyes pumped by the 532 nm radiation, oscillating from 570 nm to 707 nm, the range of tunability in the infrared extends from 2 μm up to 6 μm continuously. The puls… Show more
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