High-energy ultrashort-pulse all-fiber erbium-doped ring laser with improved free-running performance

Dvoretskiy, Dmitriy A.; Sazonkin, Stanislav G.; Orekhov, Ilya O.; Kudelin, Igor S.; Pnev, Alexey B.; Karasik, Valeriy E.; Krylov, A. A.; Denisov, L. K.

doi:10.1364/josab.35.002010

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…Here, a mode-locked fibre laser operates in two different generation regimes set by adjustable parameters (intracavity polarisation state, pump power, etc.) [ 138 ]. As depicted, central peaks corresponding to the fundamental repetition rate are almost identical.…”

Section: Ultrafast Lasersmentioning

confidence: 99%

“…Generally, Allan deviation estimates the ability of the measured frequency to remain unchanged. The example of Allan deviations of free-running mode-locked fibre laser repetition rate at two different generation regimes is depicted in Figure 5 b [ 138 ]. Nowadays, the most prominent laser systems with active stabilisation achieve an uncertainty at the level of

at 1 s time scale [ 142 , 143 ].…”

Section: Ultrafast Lasersmentioning

confidence: 99%

“…The RIN PSD can be derived from the RF spectrum analyser. Figure 5 c demonstrates the RIN PSDs for two operation regimes in a free-running ultrafast fibre laser [ 138 ]. Paschotta [ 157 ] studied the influence of the intensity noise on timing jitter and indicated the following coupling mechanisms: slow saturable absorber, Kramers–Krönig-related phase change, nonlinear Kerr effect and Raman self-frequency shift.…”

Section: Ultrafast Lasersmentioning

confidence: 99%

“… Characteristic of ultrafast lasers: ( a ) radio frequency spectrum at the fundamental repetition rate; ( b ) Allan deviation of fundamental rate; and ( c ) relative intensity noise for soliton operation regimes in a free-running fibre laser with total intracavity dispersion of −0.005 (red line) and −0.021 (blue line). Adapted with permission from [ 138 ] © The Optical Society. …”

Section: Figurementioning

confidence: 99%

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Rotation Active Sensors Based on Ultrafast Fibre Lasers

Kudelin

Sugavanam

Chernysheva

2021

Sensors

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Gyroscopes merit an undeniable role in inertial navigation systems, geodesy and seismology. By employing the optical Sagnac effect, ring laser gyroscopes provide exceptionally accurate measurements of even ultraslow angular velocity with a resolution up to 10−11 rad/s. With the recent advancement of ultrafast fibre lasers and, particularly, enabling effective bidirectional generation, their applications have been expanded to the areas of dual-comb spectroscopy and gyroscopy. Exceptional compactness, maintenance-free operation and rather low cost make ultrafast fibre lasers attractive for sensing applications. Remarkably, laser gyroscope operation in the ultrashort pulse generation regime presents a promising approach for eliminating sensing limitations caused by the synchronisation of counter-propagating channels, the most critical of which is frequency lock-in. In this work, we overview the fundamentals of gyroscopic sensing and ultrafast fibre lasers to bridge the gap between tools development and their real-world applications. This article provides a historical outline, highlights the most recent advancements and discusses perspectives for the expanding field of ultrafast fibre laser gyroscopes. We acknowledge the bottlenecks and deficiencies of the presented ultrafast laser gyroscope concepts due to intrinsic physical effects or currently available measurement methodology. Finally, the current work outlines solutions for further ultrafast laser technology development to translate to future commercial gyroscopes.

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Section: Ultrafast Lasersmentioning

confidence: 99%

at 1 s time scale [ 142 , 143 ].…”

Section: Ultrafast Lasersmentioning

confidence: 99%

Section: Ultrafast Lasersmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Rotation Active Sensors Based on Ultrafast Fibre Lasers

Kudelin

Sugavanam

Chernysheva

2021

Sensors

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“…The average output power of the pulses is ~1 mW. It should be noted that such a low threshold ML compared to only ML based on NPE [20] is, on the one hand, explained by the use of C: BNNTs SA, which reliably triggers ML at low pump power, as well as complex dissipative dynamics, where the stable regime is only possible when there is a balance not only between dispersion and nonlinearity, but also in the intracavity gain and losses [7]. Figure 3 shows an experimentally observed optical spectrum before amplification at a central wavelength of 1558 nm, with a full width at half maximum (FWHM) of 15 nm (obtained using the Yokogawa AQ6370D spectrum analyzer).…”

Section: Resultsmentioning

confidence: 94%

Properties of Scalable Chirped-Pulse Optical Comb in Erbium-Doped Ultrafast All-Fiber Ring Laser

Orekhov

Dvoretskiy

Sazonkin

et al. 2021

Fibers

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We report on a scalable chirped-pulse Er-doped all-fiber laser, passively mode-locked by single-wall carbon nitride nanotubes. The average output power is ~15 mW, which corresponds to a peak power of ~77 W, and pulse energy of ~1.9 nJ and was achieved using a single amplification stage. We observed chirped-pulse generation with a duration of ~24.6 ps at a relatively low repetition rate of ~7.9 MHz, with a signal-to-noise ratio of ~69 dB. To characterize the short-term stability of the obtained regime, we have measured the relative intensity noise of the laser, which is <−107 dBc/Hz in the range of 3 Hz–1000 kHz. It should be noted that the standard deviation of root mean square of average power does not exceed a magnitude of 0.9% for 3 h of measurement.

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