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The energy and spectral characteristics of a room-temperature pulsed laser on a ZnS:Fe2+polycrystal
| Content Provider | Scilit |
|---|---|
| Author | Firsov, K. N. Gavrishchuk, E. M. Ikonnikov, V. B. Kazantsev, Sergey Kononov, Igor Kotereva, T. V. Savin, D. V. Timofeeva, N. A. |
| Copyright Year | 2016 |
| Description | Journal: Laser Physics Letters The energy and spectral characteristics of a laser on a $ZnS:Fe^{2+}$ polycrystal operating at room temperature have been studied. The laser was pumped by a non-chain electro-discharge HF laser with a full-width at half-maximum pulse duration of ~140 ns. The diameter of the pumping radiation spot on the crystal surface was 3.8 mm. The two-sided diffuse doping of a polycrystalline CVD-ZnS sample with the surfaces preliminarily coated by high-purity iron films was performed in the process of hot isostatic pressing (HIP) in an argon atmosphere at a pressure of 100 MPa and temperature of 1290 °С. Increasing the duration of the HIP treatment from 54 h to 72 h made it possible to obtain twice the doping depth, and correspondingly, twice the length of active medium. As a result, the slope laser efficiency with respect to the absorbed energy was raised by a factor of 1.75 as compared to the value obtained in our earlier work with a polycrystalline sample. The generation energy was 25 mJ at a slope efficiency of η$ _{slope}$ = 35%. It was established that the generation spectra of the laser with a non-selective resonator have a linear structure with intervals between the neighboring lines of δ$ _{ λ }$ ≈ 6 ÷ 8 nm, which is spurious for solid-state lasers. The spectral structure observed is not related to the elements inside the resonator, which might form Fabry–Perot interferometers. |
| Related Links | http://iopscience.iop.org/article/10.1088/1612-2011/13/4/045004/pdf |
| ISSN | 16122011 |
| e-ISSN | 1612202X |
| DOI | 10.1088/1612-2011/13/4/045004 |
| Journal | Laser Physics Letters |
| Issue Number | 4 |
| Volume Number | 13 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2016-03-18 |
| Access Restriction | Open |
| Subject Keyword | Journal: Laser Physics Letters |
| Content Type | Text |
| Resource Type | Article |
| Subject | Instrumentation |
