CW light sources at the 589 nm sodium D2 line by sum-frequency mixing of diode pumped neodymium lasers

Abstract

We present a laser architecture to obtain continuouswave (CW) light sources at the 589 nm sodium D2 line. A 808 nm diode-pumped a Nd:YLiF 4 (Nd:YLF) crystal emitting at 1053 nm. A part of the pump power was then absorbed by the Nd:YLF crystal. The remaining was used to pump a Nd:YAG crystal emitting at 1338 nm. Intracavity sum-frequency mixing at 1053 and 1338 nm was then realized in a LiB 3 O 5 (LBO) crystal to reach the yellow-orange radiation. We obtained a CW output power of 235 mW at 589 nm with a pump laser diode emitting 17.8 W at 808 nm. Stability of the yellow-orange output power around the 235 mW operation point

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“…In past few years, new solid sate lasers were designed to enlarge the panel of wavelengths [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. All solid state red laser has attracted much attention for wide applications such as color display, medical treatment, pumping Cr:LiSAF laser.…”

555 nm laser sources based on intracavity frequency doubling of Nd:YGG laser

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