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Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) lasing waveguide in Yb:KGdW written at 408 nJ pulse energy, (b) lasing waveguide in Yb:KGdW written at 369 nJ pulse energy, and (c) lasing waveguides in Yb:KYW for (inscription pulse energy 392 nJ).

Image of FIG. 2.
FIG. 2.

Microluminescence maps of the 980 nm emission peak of the structures written at 408 nJ pulse energy in Yb:KGdW [(a) and (c)] and 392 nJ pulse energy in Yb:KYW [(b)and (d)] showing [(a) and (c)] normalized intensity of the peak and [(b) and (d)] wavelength shift of the peak. Linescans of (e) intensity and (f) peak wavelength shift corresponding to dotted lines in [(a)–(d)].

Image of FIG. 3.
FIG. 3.

-Raman maps in Yb:KGdW of the [(a) and (b)] , [(c) and (d)] , and [(e) and (f)] frequency shifts, showing [(a), (c), and (e)] normalized intensities of the peaks, [(b), (d), and (f)] variations in the frequency shifts of the peaks.

Image of FIG. 4.
FIG. 4.

-Raman maps in Yb:KYW of the line, showing (a) normalized peak intensity, (b) variations in the frequency shift of the peaks. Linescans of (c) frequency shifts in the Yb:KYW Raman lines, where the most significant shift is seen in the line, (d) shifts in the line in structures written with different pulse energies. The linescans correspond to the dotted lines in (b).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals