Timing jitter in mode-locked and gain-switched InGaAsP injection lasers

Taylor, A.; Wiesenfeld, J. M.; Eisenstein, G.; Tucker, R.S.

doi:10.1063/1.97566

Cited by 81 publications

(9 citation statements)

References 9 publications

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“…The output peak power of the AML-EDFL with an intra-cavity SOA is larger, however, its pulsewidth is slightly broadened due to the adding of SOA. The analysis of phase noise (or timing jitter) is extensively used in versatile lasers [16][17][18][19][20]. The phase noise of optical pulses generated from AML-EDFL and GSLD-EDFA link are also characterized.…”

Section: Resultsmentioning

confidence: 99%

Comparison of the noise and jitter characteristics of harmonic injection-locked and mode-locked erbium-doped fiber lasers

Chang

Lin

2005

SPIE Proceedings

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We compare the noise characteristics of optical pulses generated from an actively mode-locked (AML) erbium-doped fiber laser (EDFL) with a semiconductor optical amplifier and an injection-locked EDFL with a gain-switched FabryPerot laser diode (FPLD). The mode-locked EDFL pulse exhibits a phase noise of -110.1 dBc/Hz (at 1 MHz offset frequencies from the carrier), the timing jitter of 1.16 ps, and a supermode noise suppression ratio of 47.5 dB. The injection-locked EDFL pulse exhibits a phase noise of -121.1 dBc/Hz (at 1 MHz offset frequencies from the carrier), a timing jitter of 0.31 ps, and a supermode noise suppression ratio of 51 dB. It is demonstrated that the injection-locked EDFL with a gain-switched FPLD has lower noise characteristics than the AML-EDFL.

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Section: Resultsmentioning

confidence: 99%

Comparison of the noise and jitter characteristics of harmonic injection-locked and mode-locked erbium-doped fiber lasers

Chang

Lin

2005

SPIE Proceedings

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“…Assuming that the optical pulse-train exhibits small and stationary phase deviations (i.e. small timing jitter) without any secondary phase deviating sidebands, a spectral domain technique is employed to characterize the SSB phase noise and pulse-to-pulse timing jitter characteristics of the EDFL pulses [10,[15][16][17][18][19]. Such a technique neglects the influences of pulse shape and pulsewidth fluctuations, which assumes no correlation between amplitude and phase fluctuations.…”

Section: Methodsmentioning

confidence: 99%

Ultrahigh supermode noise suppressing ratio of a semiconductor optical amplifier filtered harmonically mode-locked Erbium-doped fiber laser

Lin

Chang

et al. 2005

Opt. Express

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The supermode noise suppressing ratio (SMSR) and the phase noise of a harmonically mode-locked Erbium-doped fiber laser (HML-EDFL) with an intra-cavity semiconductor optical amplifier (SOA) and an optical band-pass filter (OBPF) are improved and compared with a state-of-the-art Fabry-Perot laser diode (FPLD) injection-mode-locked EDFL. By driving the intra-cavity SOA based high-pass filter at unitary gain condition, the SMSR of the HML-EDFL is enhanced to 82 dB at the cost of degrading phase noise, increasing jitter, and broadened pulse width. The adding of OBPF further improves the SMSR, pulse width, phase noise, and jitter of the SOA-filtered HML-EDFL to 90 dB, 42 ps, -112 dBc/Hz, and 0.7 ps, respectively. The ultrahigh SMSR of the SOA-filtered HML-EDFL can compete with that of the FPLD injection-mode-locked EDFL without sacrificing its pulse width and jitter performances.

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“…The fiber laser design used was based on a gain-switched seed diode, multiple fiber amplification stages, and a final second harmonic generation stage. While the gain switch diodes exhibit high timing stability, defined by the electric circuitry used [25], the pulse-to-pulse energy stability is on the order of ± 1% [26]. Multiple amplification stages work as positive feedback loops and thus decrease the energy stability.…”

Section: Manufacturing Precisionmentioning

confidence: 99%

Precision and resolution in laser direct microstructuring with bursts of picosecond pulses

Mur

Petkovšek

2017

Appl. Phys. A

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Pulsed laser sources facilitate various applications, including efficient material removal in different scientific and industrial applications. Commercially available laser systems in the field typically use a focused laser beam of 10-20 μm in diameter. In line with the ongoing trends of miniaturization, we have developed a picosecond fiber laser-based system combining fast beam deflection and tight focusing for material processing and optical applications. We have predicted and verified the system's precision, resolution, and minimum achievable feature size for material processing applications. The analysis of the laser's performance requirements for the specific applications of high-precision laser processing is an important aspect for further development of the technique. We have predicted and experimentally verified that maximal edge roughness of single-micrometer-sized features was below 200 nm, including the laser's energy and positioning stability, beam deflection, the effect of spot spacing, and efficient isolation of mechanical vibrations. We have demonstrated that a novel fiber laser operating regime in bursts of pulses increases the laser energy stability. The results of our research improve the potential of fiber laser sources for material processing applications and facilitate their use through enabling the operation at lower pulse energies in bursts as opposed to single pulse regimes.

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Timing jitter in mode-locked and gain-switched InGaAsP injection lasers

Cited by 81 publications

References 9 publications

Comparison of the noise and jitter characteristics of harmonic injection-locked and mode-locked erbium-doped fiber lasers

Comparison of the noise and jitter characteristics of harmonic injection-locked and mode-locked erbium-doped fiber lasers

Ultrahigh supermode noise suppressing ratio of a semiconductor optical amplifier filtered harmonically mode-locked Erbium-doped fiber laser

Precision and resolution in laser direct microstructuring with bursts of picosecond pulses

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