Laser Pulse-Shaping and Mode-Locking With Acoustic Waves

DeMaria, A. J.; Stetser, D. A.

doi:10.1063/1.1754305

Cited by 25 publications

(7 citation statements)

References 5 publications

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“…Early measurements of mode-locked operation onset were performed by DeMaria and Stetser [9]. Since then, the transient regime prior to ML operation in self-starting femtosecond oscillators has been studied for laser oscillators both without [10][11][12] and with [13,14] saturable absorberseither dyes [15], doped glass [16] or SESAMs [17,18].…”

Section: Introductionmentioning

confidence: 99%

Witnessing the pulse birth—transient dynamics in a passively mode-locked femtosecond laser

Zinkiewicz¹,

Ozimek²,

Wasylczyk³

2013

Laser Phys. Lett.

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High temporal resolution measurements of the output of an Yb:KYW femtosecond laser, recorded immediately after opening the laser cavity, give an insight into the transient laser dynamics. The evolution of the light intensity measured with linear and nonlinear detectors, together with the time-resolved laser spectrum were measured and the process of the mode-locking onset was investigated. A phenomenological model of the laser dynamics has been developed that reproduces the experimental results.

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Section: Introductionmentioning

confidence: 99%

Witnessing the pulse birth—transient dynamics in a passively mode-locked femtosecond laser

Zinkiewicz¹,

Ozimek²,

Wasylczyk³

2013

Laser Phys. Lett.

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“…Harris and Targ [17] used an internal frequency modulator to mode-lock the same laser, resulting in a frequency-modulated output. In the following years, the techniques of mode-locking were demonstrated in other laser systems, including the argon ion laser [7], the ruby laser [4], and the neodymium-doped yttrium aluminum garnet (Nd:YAG) laser [6]. In each case, the pulse-widths achieved were on the order of tens of pico-seconds, but the pulse trains were subject to fluctuations and instabilities.…”

Section: Introductionmentioning

confidence: 99%

Pulse Dynamics in an Actively Mode-Locked Laser

Geddes

Firth²,

Black³

2003

SIAM J. Appl. Dyn. Syst.

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Abstract. We consider pulse formation dynamics in an actively mode-locked laser. We show that an amplitudemodulated laser is subject to large transient growth and we demonstrate that at threshold the transient growth is precisely the Petermann excess noise factor for a laser governed by a nonnormal operator. We also demonstrate an exact reduction from the governing PDEs to a low-dimensional system of ODEs for the parameters of an evolving pulse. A linearized version of these equations allows us to find analytical expressions for the transient growth below threshold. We also show that the nonlinear system collapses onto an appropriate fixed point, and thus in the absence of noise the ground-mode laser pulse is stable. We demonstrate numerically that, in the presence of a continuous noise source, however, the laser destabilizes and pulses are repeatedly created and annihilated.

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“…Shaping the temporal profile of laser pulses can be realized using acousto-optic modulators (AOMs), where control signals can be used to generate arbitrary amplitude and frequency patterns of a laser 25,26 . The spatial profile of a laser beam can be manipulated by a spatial light modulator (SLM), typically implemented as a liquid crystal display (LCD) or digital micro-mirror devices.…”

Section: Motivationmentioning

confidence: 99%

“…Furthermore, in the field of experimental quantum optics, laser fields are often used to manipulate the internal or motional state of atoms, and need to be shaped in time and space. Shaping the temporal profile of laser pulses can be realized using acousto-optic modulators (AOMs), where control signals can be used to generate arbitrary amplitude and frequency patterns of a laser 25,26 . The spatial profile of a laser beam can be manipulated by a spatial light modulator (SLM), typically implemented as arXiv:1307.5672v3 [physics.ins-det]…”

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confidence: 99%

A scalable, fast, and multichannel arbitrary waveform generator

Baig

Johanning

Wiese

et al. 2013

Review of Scientific Instruments

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This article reports on the development of a multichannel arbitrary waveform generator (MAWG) that simultaneously generates arbitrary voltage waveforms on 24 independent channels with a dynamic update rate of up to 25 Msps. A real-time execution of a single waveform and/or sequence of multiple waveforms in succession, with a user programmable arbitrary sequence order is provided under the control of a stand-alone sequencer circuit implemented using an FPGA. The device is operated using an internal clock and can be synced to other devices by means of transistortransistor logic (TTL) pulses. The device can provide up to 24 independent voltages in the range of up to ± 9 V with a dynamic update-rate of up to 25 Msps and a power consumption of less than 35 W. Every channel can be programmed for 16 independent arbitrary waveforms that can be accessed during run time with a minimum switching delay of 160 ns. The device has a low-noise of 250 µV rms and provides a stable long-term operation with a drift rate below 10 µV/min and a maximum deviation less than ± 300 µV pp over a period of two hours. I. MOTIVATIONIon traps have promising potential in the field of quantum information science [1][2][3][4] , and in particular microstructured Paul traps are well suited for this purpose. They can have multiple zones for trapping, processing and storing of atomic ions 5-9 . Scaling such traps up for quantum information processing requires a large number of independent high bandwidth, low noise voltage signals.In this approach, a register of quantum bits (qubits) is stored in the internal states of laser-cooled trapped ions (forming a Wigner crystal), and in some implementations in motional states of their normal modes 1 . Wigner crystals of increasing length become difficult to cool and to protect against environmental influences and thus are subject to decoherence. This is detrimental for tasks that rely on the computational power of quantum superpositions and entanglement. Splitting the quantum register into crystals of manageable size and entangling them on demand in a quantum network is regarded as a promising and straight-forward solution. This can be achieved in segmented ion traps where storage, shuttling and processing zones 5,10 are realized by a large number of DC electrodes. These type of traps are often regarded as a prerequisite to scalable quantum information processing using trapped ions.Specific implementations of such a partitioned quantum register require shuttling of ions in order to be able to exchange information between independent crystals and this is ideally done with low heating of the motional state 10 . This can be achieved by shuttling of the ions in an adiabatic fashion, at the expense of long shuttling times 11 , or in an tailored diabatic way which can be optimized for low heating 6,12,13 . The latter requires voltages with a fast update rate.Another building block of this type of quantum information processing is splitting and merging strings of a) Electronic mail: wunderlich@physik.uni-siegen.de i...

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Laser Pulse-Shaping and Mode-Locking With Acoustic Waves

Cited by 25 publications

References 5 publications

Witnessing the pulse birth—transient dynamics in a passively mode-locked femtosecond laser

Witnessing the pulse birth—transient dynamics in a passively mode-locked femtosecond laser

Pulse Dynamics in an Actively Mode-Locked Laser

A scalable, fast, and multichannel arbitrary waveform generator

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