Fibre-laser based ultra-low phase noise LO generation for future radar

Michael J. Staniforth

doi:10.1117/12.745159

7 November 2007 Fibre-laser based ultra-low phase noise LO generation for future radar

Michael J. Staniforth

Proceedings Volume 6739, Electro-Optical Remote Sensing, Detection, and Photonic Technologies and Their Applications; 67390N (2007) https://doi.org/10.1117/12.745159
Event: Optics/Photonics in Security and Defence, 2007, Florence, Italy

Abstract

Many military radar applications call for improved fidelity and shorter timescales in difficult environments of high background clutter. This paper examines the design of an LO for general radar applications with very large phase noise and stability improvements over quartz based systems (>50 dB) using fibre-laser based clockworks and oscillators. The examination is based around a strawman architecture to exploit the division of very high frequency optical standards (laser lines at 450 or 250 THz) to microwave frequencies and the consequential high phase noise improvement factors (~100 dB). The design utilises guided systems (fibre lasers and all other components in fibre) as far as possible to provide an easier to achieve, rugged and portable system. The design also uses improved non-linear super-continuum generation components, which require less laser power to drive them (from 100's of mW to 10 mW thus removing the need for optical power amplification). The use of direct diode pumped fibre-lasers reduces inefficiency as compared with solid-state free space lasers to make the system low power and air-cooled.

Citation Download Citation

Michael J. Staniforth "Fibre-laser based ultra-low phase noise LO generation for future radar", Proc. SPIE 6739, Electro-Optical Remote Sensing, Detection, and Photonic Technologies and Their Applications, 67390N (7 November 2007); https://doi.org/10.1117/12.745159

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KEYWORDS

Fiber lasers

Radar

Femtosecond phenomena

Continuous wave operation

Solid state lasers

Laser applications

Laser optics

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