Optical homogeneity of the active media of cw chemical HF(DF) lasers

Er 3+ doped Ni-Si-O compounds deposited by the magnetron sputtering technique are investigated. Compared with the optimized photoluminescence (PL) of Er 3+ in Si-rich Si oxide, the PL of Er 3+ in the compounds is strikingly enhanced in the ranges 500-900 nm and 1470-1650 nm. This enhancement and the appearance of many sharp peaks around 1.54 µm in the spectra depend on the Ni content and the annealing temperature. Two-order enhancement in the range 1470-1650 nm is achieved for the Ni-Si-O compound with 25 at.% Ni after 1150 • C annealing. The above experiments indicate that Ni induces new local environments around Er 3+ , which are responsible for PL enhancement and appearance of sharp peaks.

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Analysis of the spatial scales of optical inhomogeneities in active media of high-power gas-flow laser amplifiers

Bashkin

Lobachev

Fedorov

1997

Quantum Electron.

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Supersonic cw chemical HF laser with a two-jet nozzle array and additional dilution of reagents by a rare gas

et al. 1997

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In this paper we report a new approach to realize negative differential conductance (NDC) with a high peak-to-valley (P/V ) ratio in silicon metal-oxide-semiconductor field effect transistors (Si MOSFETs). A P/V ratio of as large as 10 at room temperature has been demonstrated by controlling the effective biasing to p-MOSFETs fabricated on a silicon-on-insulator (SOI) wafer. Although the band-to-band tunneling current is utilized, the excess tunneling current which has ever limited the P/V ratio in the Si Esaki diode is eliminated in the proposed method. Higher P/V ratio will enable us to incorporate NDC functionality into future Si large-scale integrated (LSI) circuits and open up new possibilities for LSI applications.

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Laser based on an SF₆— H₂mixture pumped by a radially converging electron beam

et al. 1997

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Optical homogeneity of the active media of cw chemical HF(DF) lasers

Cited by 5 publications

References 5 publications

Analysis of the spatial scales of optical inhomogeneities in active media of high-power gas-flow laser amplifiers

Analysis of the spatial scales of optical inhomogeneities in active media of high-power gas-flow laser amplifiers

Supersonic cw chemical HF laser with a two-jet nozzle array and additional dilution of reagents by a rare gas

Laser based on an SF₆— H₂mixture pumped by a radially converging electron beam

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Optical homogeneity of the active media of cw chemical HF(DF) lasers

Cited by 5 publications

References 5 publications

Analysis of the spatial scales of optical inhomogeneities in active media of high-power gas-flow laser amplifiers

Analysis of the spatial scales of optical inhomogeneities in active media of high-power gas-flow laser amplifiers

Supersonic cw chemical HF laser with a two-jet nozzle array and additional dilution of reagents by a rare gas

Laser based on an SF6— H2mixture pumped by a radially converging electron beam

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Product

Resources

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Laser based on an SF₆— H₂mixture pumped by a radially converging electron beam