Luminescent and lasing characteristics of polycrystalline Cr:Fe:ZnSe exited at 2.09 and 2.94 μm wavelengths

被引：11

作者：

Antonov, V. A. ^{[1
]}

Firsov, K. N. ^{[2
,3
]}

Gavrishchuk, E. M. ^{[4
,5
]}

Ikonnikov, V. B. ^{[4
]}

Kononov, I. G. ^{[2
]}

Kotereva, T., V ^{[4
]}

Kurashkin, S., V ^{[4
]}

Podlesnykh, S., V ^{[2
]}

Rodin, S. A. ^{[4
]}

Savin, D., V ^{[4
]}

Sirotkin, A. A. ^{[2
]}

Titirenko, A. M. ^{[2
]}

Zhavoronkov, N., V ^{[1
]}

机构：

[1] JSC, RIMST, Georgievskiy Prospect 5,Bldg 2, Moscow 124460, Russia

[2] RAS, AM Prokhorov Gen Phys Inst, 38 Vavilov Str, Moscow 119991, Russia

[3] Natl Res Nucl Univ MEPhI, Kashirskoye Shosse 31, Moscow 115409, Russia

[4] RAS, GG Devyatykh Inst Chem High Pur Subst, 49 Tropinina St, Nizhnii Novgorod 603950, Russia

[5] NI Lobachevski Nizhny Novgorod State Univ, 23 Gagarin Ave, Nizhnii Novgorod 603950, Russia

来源：

LASER PHYSICS LETTERS | 2019年 / 16卷 / 09期

基金：

俄罗斯科学基金会; 俄罗斯基础研究基金会;

关键词：

Fe:ZnSe laser; Cr:Fe:ZnSe; diffuse doping; hot isostatic pressing; energy transfer; photoluminescence; co-doped polycrystals; FE2+ ZNSE LASER; CO-DOPED ZNSE; ROOM-TEMPERATURE; CHROMIUM DIFFUSION; ENERGY-TRANSFER; IRON;

D O I：

10.1088/1612-202X/ab3851

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The luminescence of Cr2+ and Fe2+ in Cr:Fe:ZnSe polycrystals excited at room temperature by pulsed lasers at wavelengths of 2.09 and 2.94 proportional to m was studied. For comparison, we also studied the luminescence in single crystals and polycrystals of Fe:ZnSe with iron ion concentration in the range from 5.6 x 10(18) to 5.7 x 10(19) cm(-3). Doping of the polycrystalline samples was carried out using a high-temperature diffusion process with subsequent control of the dopants concentration distribution over the crystal depth. The dependence of the luminescence lifetime tau lt of Fe2+ ions on the dopants concentration in crystals excited at a wavelength of 2.94 proportional to m was obtained. It was found that chromium quenches the luminescence of Fe2+ no less actively (if no more) than iron itself. The tau lt values were measured for Fe:ZnSe excited at a wavelength of 2.94 proportional to m and Cr:Fe:ZnSe samples with the same maximum Fe2+ ions concentrations (approximate to 0.9 x 10(19) cm(-3)) at wavelengths of 2.94 proportional to m and 2.09 proportional to m. A noticeable increase in tlt value and luminescence rise time was observed in Cr:Fe:ZnSe crystals excited at a wavelength of 2.09 proportional to m (tau lt approximate to 460 ns) compared to 2.94 proportional to m (tau lt approximate to 240 ns). For comparison, the value of tau lt in Fe:ZnSe was about 340 ns. The obtained results confirm the fast energy transfer in Cr:Fe:ZnSe crystals from excited chromium ions to iron ions. The output characteristics of lasers on Fe:ZnSe and Cr:Fe:ZnSe polycrystalline active elements with pumping by HF laser radiation were compared. The slope efficiency with respect to the absorbed energy of Cr:Fe:ZnSe lasers was significantly lower, and the generation threshold was two times higher than for Fe:ZnSe lasers. The prospects for creating a room temperature laser, in which the excitation of iron ions will be carried out through energy transfer from chromium ions, are analyzed.

引用

页数：8

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