High external power narrow bandwidth erbium doped waveguide laser on thin film lithium niobate [PDF]
NanophotonicsErbium-doped waveguide lasers have attracted great interests in recent years due to their compact footprint, high scalability and low phase noise. In this work, by using a high-external-gain erbium-doped thin-film lithium niobate waveguide as the gain ...
Ma Yu +7 more
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Comparison of Different Linewidth Measuring Methods for Narrow Linewidth Laser [PDF]
Sensors, 2022 We experimentally demonstrate a fiber laser with different linewidths based on self-injection locking (SIL) and the stimulated Brillouin scattering effect.
Ziqi Zheng +9 more
doaj +2 more sources
An improved delayed self-heterodyne interferometer for linewidth measurements [PDF]
IEEE Photonics Technology Letters, 1992 The authors demonstrated a delayed self-heterodyne interferometer with a recirculating delay, in which loss was partially compensated by an erbium-doped fiber amplifier.
Dawson, Jay W. +2 more
core +4 more sources
A Comparison of Delayed Self-Heterodyne Interference Measurement of Laser Linewidth Using Mach-Zehnder and Michelson Interferometers [PDF]
Sensors, 2011 Linewidth measurements of a distributed feedback (DFB) fibre laser are made using delayed self heterodyne interferometry (DHSI) with both Mach-Zehnder and Michelson interferometer configurations.
Simon Fleming +6 more
doaj +2 more sources
The Influence of Noise Floor on the Measurement of Laser Linewidth Using Short-Delay-Length Self-Heterodyne/Homodyne Techniques [PDF]
Micromachines, 2022 Delayed self-heterodyne/homodyne measurements based on an unbalanced interferometer are the most used methods for measuring the linewidth of narrow-linewidth lasers.
Zhongan Zhao +9 more
doaj +2 more sources
Linewidth Measurement of a Narrow-Linewidth Laser: Principles, Methods, and Systems [PDF]
SensorsNarrow-linewidth lasers mainly depend on the development of advanced laser linewidth measurement methods for related technological progress as key devices in satellite laser communications, precision measurements, ultra-high-speed optical communications,
Jia-Qi Chen +7 more
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A Polarization-Insensitive Recirculating Delayed Self-Heterodyne Method for Sub-Kilohertz Laser Linewidth Measurement [PDF]
Photonics, 2021 A polarization-insensitive recirculating delayed self-heterodyne method (PI-RDSHM) is proposed and demonstrated for the precise measurement of sub-kilohertz laser linewidths. By a unique combination of Faraday rotator mirrors (FRMs) in an interferometer,
Jing Gao +8 more
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Simplified Laser Frequency Noise Measurement Using the Delayed Self-Heterodyne Method
PhotonicsHere, we report on a simplified laser frequency noise measurement technique employing an acousto-optic modulator, a delay line, and a real-time oscilloscope. The technique is a slight modification of the typical delayed heterodyne method.
Seán P. Ó Dúill, Liam P. Barry
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Study on Linewidth and Phase Noise Characteristics of a Narrow Linewidth External Cavity Diode Laser [PDF]
SensorsIn the field of inter-satellite laser communication, achieving high-quality communication and compensating for the Doppler frequency shift caused by relative motion necessitate lasers with narrow linewidths, low phase noise, and the ability to achieve ...
Sheng Hu +10 more
doaj +2 more sources
High Precision Estimation of Laser FM-Noise Using RF Quadrature Demodulation Techniques
IEEE Access, 2022 We report on a technique that uses RF quadrature demodulation to measure laser FM-noise based on a delayed self-heterodyne setup. The measurement is self-referencing and the FM-noise can be measured with high precision over a sufficiently long duration ...
Sean P. O'duill, Liam P. Barry
doaj +1 more source