Enhanced frequency doubling of a laser diode using a ring enhancement cavity

Won Je Joo, Cha-Hwan Oh, Pill Soo Kim, Seok Ho Song

Research output: Contribution to journalArticle

Abstract

The second harmonic of the 787-nm output of a GaAlAs diode laser is generated in a LilO 3 crystal in an external ring enhancement cavity. The power of the second harmonic is measured for various geometric conditions of the ring cavity such as the focusing parameter, ξ, and the adjustment value of the cavity, δ. The optimum focusing parameter is experimentally determined to be ξ=1.5. A second harmonic power of 5.6 μW at 393.5 nm is obtained with an input fundamental power of 10 mW. The relative center frequency of the second harmonic is locked within 400 kHz to the resonance frequency of the ring cavity.

Original languageEnglish
Pages (from-to)31-35
Number of pages5
JournalJournal of the Korean Physical Society
Volume33
Issue number1
StatePublished - 1998 Dec 1

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