Modelocked semiconductor laser system with pulse picking for variable repetition rate

Balzer, Jan C.; Schlauch, T.; Hoffmann, Th.; Klehr, A.; Erbert, G.; Hofmann, Martin R.

doi:10.1049/el.2011.3378

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…The pulses are positioned exactly in the middle of the preexisting sequence. This allows for a high variability of the repetition rate, especially if combined with a pulse picking device [22].…”

Section: External Cavity Lasermentioning

confidence: 99%

Passively Mode-Locked Diode Laser With Optimized Dispersion Management

Balzer

Pilny

Döpke

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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We investigate passively mode-locked diode lasers with external cavity for ultrashort pulse generation. Our strategy to achieve ultrashort pulses is to generate strongly chirped pulses with a maximized bandwidth and to compress them externally. By managing intracavity dispersion with an evolutionary algorithm, we obtain pulse widths as short as 278 fs following this approach. We analyze the bandwidth of the optimized pulses in comparison to the available net gain bandwidth of the diode laser device to derive further strategies for achieving shorter pulses.Index Terms-Mode-locked laser, semiconductor lasers, ultrafast pulse generation.

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Section: External Cavity Lasermentioning

confidence: 99%

Passively Mode-Locked Diode Laser With Optimized Dispersion Management

Balzer

Pilny

Döpke

et al. 2015

IEEE J. Select. Topics Quantum Electron.

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“…A repetition rate in the kilohertz region is required for a regenerative amplifier, or fluorescence lifetime measurements, for example. In order to produce the repetition rate in the kilohertz region, pulse pickers such as electro-optical modulators (EO), acousto-optical (AO) modulators or Mach-Zehnder modulators are often used [3][4][5]. However they require large size and high cost, and restrict the choice of repetition rate.…”

Section: Introductionmentioning

confidence: 99%

Optical switch by direct modulated laser diode using fiber laser for pulse picking

Kaneko

Yasui

Kurouchi

et al. 2023

The Journal of Engineering

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A new method of direct modulating a pre-amplifier laser diode as an optical switch is proposed. To modulate the laser diode with lower repetition rate, the repetition rate in the kilohertz region can be achieved using a source laser of 100 MHz without electro-optical modulators (EOM) or acousto-optical modulators (AOM). Using a direct modulated laser diode, an ON/OFF ratio (extinction ratio) of 25 dB was demonstrated in this study.

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“…A PCD is a high-voltage pulsed power modulator used to control the bi-refringence of an electro-optical crystal (such as KTP, KD*P, or BBO) in order to drive the polarization direction of the light propagating through the crystal. They are widely used for Q-switching [1][2][3], pulse picking [4,5], cavity damping [6,7] and regenerative amplifier control [8][9][10][11]. Taking Q-switching as an example, Figure 1 shows the optical arrangement of a solid-state laser in two different operating modes [12].…”

Section: Introduction 1description Of a Pcdmentioning

confidence: 99%

A Novel PWM Signal-Generation Strategy for Pockels Cell Drivers

Liu

Chen

et al. 2023

Photonics

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A Pockels cell driver (PCD) can be viewed as a high-voltage pulse width generator for controlling the bi-refringence effect of electro-optical crystals. The main features of a PCD include a high repetition rate, fast on and off switching, variable pulse duration, and a true square pulse shape. The most commonly used PCD has a narrow pulse width tuning range, typically within a few microseconds. In this paper, we propose a PCD based on a novel pulse width modulation (PWM) signal-generation strategy that can continuously adjust its pulse width with a minimum step size of 10 ns and no restriction on the maximum width. Therefore, it is easily compatible with both “On-type” and “Off-type” applications of the electro-optic crystal quarter-wave voltage. The experimental results show that the rising and falling times of the proposed PCD are approximately 7.3 ns and 7.8 ns, respectively, with a maximum repetition rate of 1 MHz and a maximum voltage of approximately 2.0 kV. Finally, the functionality of the PCD is demonstrated in a home-built slab laser.

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Modelocked semiconductor laser system with pulse picking for variable repetition rate

Cited by 15 publications

References 11 publications

Passively Mode-Locked Diode Laser With Optimized Dispersion Management

Passively Mode-Locked Diode Laser With Optimized Dispersion Management

Optical switch by direct modulated laser diode using fiber laser for pulse picking

A Novel PWM Signal-Generation Strategy for Pockels Cell Drivers

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