Investigations of UV spectra of powders and disordered films of ZnO excited by nanosecond pumping were conducted. Spectra of spontaneous emission were registered at 300 and 77 K. With some of our powdered samples we achieved lasing at 300 K. The threshold values of pumping energy density occurred to be higher than that under picosecond pumping approximately up to two orders of magnitude. Peculiarities of different samples lasing are demonstrated and discussed.
UV lasing in powdered ZnO excited by nanosecond pumping
2005-01-01
2444994 byte
Conference paper
Electronic Resource
English
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