Laser source requirements for coherent lidars based on fiber technology

Cariou, Jean-Pierre; Augère, Béatrice; Valla, Matthieu

doi:10.1016/j.crhy.2006.03.012

Cited by 135 publications

(58 citation statements)

References 19 publications

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“…Currently, two typical 1.5 μm LOs have been applied for the seed laser of CDL: the DFB laser diode (LD) and the DFB fiber laser [19]. LD is more suitable for the application of coherent pulsed lidars if its linewidth is smaller or equal to the inverse of pulse duration.…”

Section: Application and Discussionmentioning

confidence: 99%

100-mW linear polarization single-frequency all-fiber seed laser for coherent Doppler lidar application

Yang

Pan

et al. 2012

Optics Communications

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Section: Application and Discussionmentioning

confidence: 99%

100-mW linear polarization single-frequency all-fiber seed laser for coherent Doppler lidar application

Yang

Pan

et al. 2012

Optics Communications

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“…The local oscillating beam power which is output from the laser will be fluctuating. When local oscillating beam arrive the detector, the fluctuation of the power will produce the photoelectric current noise, which is defined the relative intensity noise (RIN) [8]. The logarithm of RIN is defined as …”

Section: Analysis Of Noisementioning

confidence: 99%

An Optimization Method of Local Oscillating Beam Power for Coherent Wind Lidar

Ma¹,

Li²,

Zhang³

2017

dtcse

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Abstract. The working principle and the influence factors of carrier-to-noise ratio of heterodyne detection are analyzed in this paper. The local oscillating beam power optimization method is proposed based on the saturation effect of photoelectric detector. Increasing the local oscillating beam power, the transpose gain can be increased, and then the detection limit of carrier-to-noise ratio can be reached. Too high local oscillating beam power will affect the precision of the photoelectric detector, then the photoelectric detector works in the nonlinear region, therefor the carrier-to-noise ratio is reduced. In this paper, the optimization strategy of carrier-to-noise ratio is proposed via analyzing the relationships between the heterodyne signal and the local oscillating beam power, the noise and the local oscillating beam power. The experimental results show that the optimal power of the local oscillating beam can be obtained for different working wavelengths of local oscillating beam by the optimization method proposed.

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“…Laser amplifiers in the 2.1 µm spectral region are required in many applications -in particular those that require excellent atmospheric transmission [1]. Sources operating at this wavelength are needed for free-space optical communications, atmospheric sensing, LIDAR and as pump sources for optical parametric oscillators for further nonlinear conversion into the midinfrared [2,3].…”

Section: Introductionmentioning

confidence: 99%

High gain holmium-doped fibre amplifiers

Simakov¹,

Li²,

Jung³

et al. 2016

Opt. Express

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Abstract:We investigate the operation of holmium-doped fibre amplifiers (HDFAs) in the 2.1 µm spectral region. For the first time we demonstrate a diode-pumped HDFA. This amplifier provides a peak gain of 25 dB at 2040 nm with a 15 dB gain window spanning the wavelength range 2030 -2100 nm with an external noise figure (NF) of 4-6 dB. We also compare the operation of HDFAs when pumped at 1950 nm and 2008 nm. The 1950 nm pumped HDFA provides 41 dB peak gain at 2060 nm with 15 dB of gain spanning the wavelength range 2050 -2120 nm and an external NF of 7-10 dB. By pumping at the longer wavelength of 2008 nm the gain bandwidth of the amplifier is shifted to longer wavelengths and using this architecture a HDFA was demonstrated with a peak gain of 39 dB at 2090 nm and 15 dB of gain spanning the wavelength range 2050 -2150 nm. The external NF over this wavelength range was 8-14 dB. nm gain extension towards 1.7 μm for diode-pumped silica-based thulium-doped fiber 2016 Optical Society of America

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Laser source requirements for coherent lidars based on fiber technology

Cited by 135 publications

References 19 publications

100-mW linear polarization single-frequency all-fiber seed laser for coherent Doppler lidar application

100-mW linear polarization single-frequency all-fiber seed laser for coherent Doppler lidar application

An Optimization Method of Local Oscillating Beam Power for Coherent Wind Lidar

High gain holmium-doped fibre amplifiers

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