Double-pass amplification of picosecond pulses with a tapered semiconductor amplifier

Forrest, Adam F.; Krakowski, M.; Bardella, Paolo; Cataluna, Maria Ana

doi:10.1364/oe.27.030752

Cited by 9 publications

(7 citation statements)

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“…The chosen setup is polarization dependent such that the only input to the diagnostics section is the output of the QD laser, with or without CW injection. This beam configuration is based on a one-way optical gate system, formerly applied to double-pass amplifier setups [13], [14].…”

Section: Methodsmentioning

confidence: 99%

On-Demand Q-Switching Regime in Optically Injected Dual-Section Quantum-Dot Laser

2022

Self Cite

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Pure Q-switching (self-pulsating) behaviour is shown for the first time in an optically injected two-section quantum-dot laser. Upon CW optical injection, it was possible to switch the operation regime from free-running mode-locking to locked Q-switching. Under this regime, the pulse repetition rate of around 1 GHz was tunable with injection power (by more than 100 MHz) and absorber reverse bias. Moreover, through injection-locking, the Q-switched output was spectrally tunable by around 7 nm, by tuning the master laser. The seamless switch between mode-locking and Q-switching with optical injection as well as the tunability and control afforded by injection-locking could open up a range of applications, such as in multi-modal imaging. On a more fundamental level, this investigation has also generated new insights into the dynamics of quantum-dot lasers and the optical injection process.

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Section: Methodsmentioning

confidence: 99%

On-Demand Q-Switching Regime in Optically Injected Dual-Section Quantum-Dot Laser

2022

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“…( 3)), the filtered E f1,out is typically less than a milliwatt. The weak signal can be amplified into a watt-level output using tapered semiconductor amplifiers under a double-pass configuration [22,28,29]. The ASE associated with the high gain can be efficiently suppressed by saturating the TSA gain with a strong enough constant seeding [28].…”

Section: Self-balanced Amplificationmentioning

confidence: 99%

“…However, the integrated lithium-niobate-based fEOM suffers from severe photo-refractive damage at short wavelengths, limiting the throughput to a few tens of milliwatts or less in atomic physics applications [18,[22][23][24][25]. The weak signal could be amplified into a watt-level output using tapered semiconductor amplifiers (TSA) under a double-pass configuration [22,28,29]. However, unlike continuous seeding [25,28], when the seeding waveform is modulated in amplitude, the amplified spontaneous emission (ASE) can be severe.…”

Section: Introductionmentioning

confidence: 99%

Intense, wideband optical waveform generation by self-balanced amplification of fiber electro-optical sideband modulation

Wang¹,

He²,

Ji³

et al. 2022

Preprint

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We demonstrate a simple method to obtain accurate optical waveforms with a GHz-level programmable modulation bandwidth and Watt-level output power for wideband optical control of free atoms and molecules. Arbitrary amplitude and phase modulations are transferred from microwave to light with a low-power fiber electro-optical modulator. The sub-milliWatt optical sideband is co-amplified with the optical carrier in a power-balanced fashion through a tapered semiconductor amplifier (TSA). By automatically keeping TSA near saturation in a quasi-continuous manner, typical noise channels associated with pulsed high-gain amplifications are efficiently suppressed. As an example application, we demonstrate interleaved cooling and trapping of two rubidium isotopes with coherent nanosecond pulses.

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“…( 3)], the filtered E f 1,out is typically less than 1 mW. The weak signal can be amplified into a watt-level output using TSAs under a double-pass configuration [22,28,29] . The ASE associated with the high gain can be efficiently suppressed by saturating the TSA gain with a strong enough constant seeding [28] .…”

Section: Self-balanced Amplificationmentioning

confidence: 99%

“…However, the integrated lithium-niobate-based fEOM suffers from severe photo-refractive damage at short wavelengths, limiting the throughput to a few tens of milliwatts or less in atomic physics applications [18,[22][23][24][25] . The weak signal could be amplified into a watt-level output using tapered semiconductor amplifiers (TSAs) under a double-pass configuration [22,28,29] . However, unlike continuous seeding [25,28] , when the seeding waveform is modulated in amplitude, the amplified spontaneous emission (ASE) can be severe.…”

Section: Introductionmentioning

confidence: 99%

Intense, wideband optical waveform generation by self-balanced amplification of fiber electro-optical sideband modulation

Wang

et al. 2022

中国光学快报

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We demonstrate a simple method to obtain accurate optical waveforms with a gigahertz-level programmable modulation bandwidth and a watt-level output power for wideband optical control of free atoms and molecules. Arbitrary amplitude and phase modulations are transferred from microwave to light with a low-power fiber electro-optical modulator. The sub-milliwatt optical sideband is co-amplified with the optical carrier in a power-balanced fashion through a tapered semiconductor amplifier (TSA). By automatically keeping TSA near saturation in a quasi-continuous manner, typical noise channels associated with pulsed high-gain amplifications are efficiently suppressed. As an example application, we demonstrate interleaved cooling and trapping of two rubidium isotopes with coherent nanosecond pulses.

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Double-pass amplification of picosecond pulses with a tapered semiconductor amplifier

Cited by 9 publications

References 0 publications

On-Demand Q-Switching Regime in Optically Injected Dual-Section Quantum-Dot Laser

On-Demand Q-Switching Regime in Optically Injected Dual-Section Quantum-Dot Laser

Intense, wideband optical waveform generation by self-balanced amplification of fiber electro-optical sideband modulation

Intense, wideband optical waveform generation by self-balanced amplification of fiber electro-optical sideband modulation

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