Efficient self-frequency doubling of Nd:GdCOB crystal by type-I phase matching out of its principal planes

We report on the efficient self-frequency doubling of Nd:GdCOB crystal by type-I phase-matching at θ=66.3° and ϕ=134.4°, which is out of its principal planes. A CW output power of 225 mW at 530.5 nm is obtained at an absorbed pump power of 1.56 W with an optical conversion efficiency of 14.4% and an...

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Veröffentlicht in:	Optics communications 2000-02, Vol.174 (5), p.471-474
Hauptverfasser:	Wang, C.Q, Chow, Y.T, Gambling, W.A, Zhang, S.J, Cheng, Z.X, Shao, Z.S, Chen, H.C
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Frequency conversion harmonic generation, including high-order harmonic generation Fundamental areas of phenomenology (including applications) Harmonic generation, frequency conversion Nd:GdCOB Nonlinear optics Optics Phase-matching Physics Principal plane Self-frequency doubling
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Zusammenfassung:	We report on the efficient self-frequency doubling of Nd:GdCOB crystal by type-I phase-matching at θ=66.3° and ϕ=134.4°, which is out of its principal planes. A CW output power of 225 mW at 530.5 nm is obtained at an absorbed pump power of 1.56 W with an optical conversion efficiency of 14.4% and an absorbed threshold pump power of 1.8 mW. To our knowledge, this is the highest output power, the highest efficiency and the lowest threshold obtained from a self-frequency-doubled Nd:GdCOB laser to date.
ISSN:	0030-4018 1873-0310
DOI:	10.1016/S0030-4018(99)00713-0