Multistaged stokes injected Raman capillary waveguide amplifier

Amplifiers – Parametric amplifiers

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307426, 330 46, H03F 700

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active

042245770

ABSTRACT:
A multistaged Stokes injected Raman capillary waveguide amplifier for providing a high gain Stokes output signal. The amplifier uses a plurality of optically coupled capillary waveguide amplifiers and one or more regenerative amplifiers to increase Stokes gain to a level sufficient for power amplification. Power amplification is provided by a multifocused Raman gain cell or a large diameter capillary waveguide. An external source of CO.sub.2 laser radiation can be injected into each of the capillary waveguide amplifier stages to increase Raman gain. Devices for injecting external sources of CO.sub.2 radiation include: dichroic mirrors, prisms, gratings and Ge Brewster plates. Alternatively, the CO.sub.2 input radiation to the first stage can be coupled and amplified between successive stages.

REFERENCES:
patent: 4095121 (1978-06-01), Begley et al.
Frey et al, "Optics Communications", 22, 355-357, Sep. 1977.
Herriott et al, "Applied Optics", 3, 523-526, 1964.
Rabinowitz et al, "Optical Society of America", Oct. 1978, pp. 147-148.
Byer et al, "Optical Society of America", Oct. 1978, pp. 144-145.

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