Efficient passively Q-switched Nd: YLF TEM 00-mode laser at 1053 nm: Selection of polarization with birefringence

Y. J. Huang, C. Y. Tang, W. L. Lee, Y. P. Huang, S. C. Huang, Yung-Fu Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


The natural birefringence of the Nd:YLF crystal is utilized to achieve a reliable TEM 00-mode linearly polarized laser at 1053 nm in a compact concave-plano resonator. The efficient selection of the polarization relies on the combined effect of the difference in diffraction angle for σ- and π-polarization of a wedged laser crystal and the alignment sensitivity of an optical resonator. We further employ a Cr 4+:YAG saturable absorber to perform the passively Qswitched operation. At an incident pump power of 12W, the maximum average output power is up to 2.3 W with a pulse repetition rate of 8 kHz and a pulse width of 9 ns. The pulse energy and peak power are found to be 288 μJ and 32 kW, respectively.

Original languageEnglish
Pages (from-to)313-317
Number of pages5
JournalApplied Physics B: Lasers and Optics
Issue number2
StatePublished - 1 Aug 2012

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