کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403197 | 1392753 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Side-hole to anti-hole conversion in time-resolved spectral hole burning of ruby: Long-lived spectral holes due to ground state level population storage
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Side-hole to anti-hole conversion in time-resolved spectral hole burning of ruby: Long-lived spectral holes due to ground state level population storage Side-hole to anti-hole conversion in time-resolved spectral hole burning of ruby: Long-lived spectral holes due to ground state level population storage](/preview/png/5403197.png)
چکیده انگلیسی
We report time-resolved transient spectral hole burning of Verneuil-grown 20 ppm and ca. 0.6 ppm ruby (Al2O3:Cr3+) in zero field and low magnetic fields Bâ¥c at 4 K. The hole-burning spectroscopy of the 20 ppm sample implies relatively rapid cross relaxation in the 4A2 ground state on the â¼1 ms timescale both in zero field and in low magnetic fields, Bâ¥c, up to 0.2 T. In the 0.6 ppm sample, side-hole to anti-hole conversion is observed both in zero field and in low magnetic fields. This conversion is caused by population storage in 4A2 ground state levels. Spin-lattice relaxation, on the 200 ms timescale, is directly observed from the time dependence of the resonant hole and anti holes in Bâ¥c, consistent with a very low cross-relaxation rate. However, in zero field cross relaxation in the 4A2 ground state is still a significant relaxation mechanism for the 0.6 ppm sample resulting in hole decay in â¼50 ms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 127, Issue 2, December 2007, Pages 655-664
Journal: Journal of Luminescence - Volume 127, Issue 2, December 2007, Pages 655-664
نویسندگان
Hans Riesen, Brendan F. Hayward, Alex Szabo,