Optimisation of frequency-modulated characteristics of output radiation in a lidar with Raman amplification

Journal Article · Thu Mar 31 00:00:00 EDT 2016 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL15882· OSTI ID:22551071

Grigorievsky, V I ^[1]; Tezadov, Ya A ^[2]

---

1. V.A.Kotel'nikov Institute of Radio Engineering and Electronics, Fryazino branch, Russian Academy of Sciences, Fryazino, Moscow Region (Russian Federation)
2. IRE-Polus Research and Technology Association, Fryazino, Moscow Region (Russian Federation)

The reported study is aimed at increasing the power in the transmission path of a lidar with Raman amplification for longpath sensing of methane by optimising the frequency-modulated characteristics of the output radiation. The pump current of the used distributed-feedback master laser was modulated by a linearfrequency signal with simultaneous application of a non-synchronous high-frequency signal. For such a modulation regime, the Raman amplifier provided the mean output power of 2.5 W at a wavelength of 1650 nm. The spectral broadening did not significantly decrease the lidar sensitivity at long paths. (lidars)

• OSTI ID: 22551071
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 46, Issue 3; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AMPLIFICATION
FREQUENCY MODULATION
LINE BROADENING
METHANE
OPTICAL RADAR
PUMPING
SENSITIVITY
TRANSMISSION
WAVELENGTHS