Concept

Q-switching

Related publications (92)

Wavelength modulation spectroscopy: combined frequency and intensity laser modulation

A theoretical model of wavelength modulation spectroscopy that uses a laser diode on a Lorentzian absorption line is presented. This theory describes the general case of a current-modulated semiconductor laser for which a combined intensity and frequency m ...

Optical Society of America2003

A Novel SOI Schottky Electro-optical Modulator for Ghz High-Speed Switching

Mihai Adrian Ionescu, Luc Thévenaz, Michel Declercq, Philippe Robert, Marco Mazza

Thermo-optical and electro-optical (plasma dispersion) effects for silicon based integrated optical modulators are becoming attractive and effective solutions for telecommunications applications such as switching for programmable optical add-drop multiplex ...

IEEE2003

Holographic techniques for recording ultrafast events

Demetri Psaltis

In this paper we report on a holographic method used to record fast events in the nanosecond time scale. Several frames of the expansion of shock waves in air and in a polymer sample are recorded holographically in a single shot experiment, using a pulse t ...

2002

Génération de deuxième et troisième harmonique avec un laser Nd:YAG en régime pulsé libre

Sébastian Favre

Industrial laser precision machining is predominately based on pulsed Nd:YAG lasers operated at a wavelength of 1.06 µm in a free running pulse regime. The objective of this thesis work has been to investigate second and third harmonic generation for such ...

EPFL2001

Fiber amplifiers for coherent space communication

René Dändliker

We report on the application of double-clad doped fiber amplifiers for coherent space communication systems using a master oscillator power amplifier (MOPA) design at 1.06 μm. The master oscillator is either a single-frequency Nd:YAG solid-state laser or a ...

2001

High power second harmonic generation with free running Nd : YAG slab laser for micro-machining applications

René Salathé, Thomas Sidler, Sébastian Favre

Frequency doubled Nd:YAG lasers represent an attractive alternative to other laser tools for many material processing applications, but frequency doubling with pulsed Nd:YAG lasers has been performed until now only with pulses of tens of nanoseconds. In ma ...

2000

Observation of dark-pulse formation in gain-clamped semiconductor optical amplifiers by cross-gain modulation

Benoît Marie Joseph Deveaud, Marc-André Dupertuis

We have measured the ultrafast simultaneous cross-gain and laser mode dynamics in a gain-clamped semiconductor amplifier perturbed by an intense detuned 150 fs pump pulse. Besides relaxation oscillations, we demonstrate the instantaneous formation of a dar ...

1999

Pulsed fiber laser using micro-electro-mechanical mirrors

Nico de Rooij, Hans Peter Herzig, René Dändliker

Two different types of micromirrors are integrated with a fiber laser to modulate the cavity Q-factor. Both systems operate at frequencies up to 60 kHz and generate a pulse peak power 100 times higher than the continuous emission. We simulate the emitted p ...

1999

Thermal Stability of InP-Based Structures for Wafer Fused Laser Diodes

Elyahou Kapon, Jean-François Carlin, Alok Rudra, Vladimir Iakovlev

Photoluminescence intensity and emission wavelength of InAsP/InGaAsP and InGaAs/InGaAsP multi-quantum well (MQW) laser structures grown by chemical beam epitaxy (CBE) at 460 degrees C and V/III ratio of 2 are considerably affected by annealing at temperatu ...

1998

Novel measurement scheme for injection locking experiments with semiconductor lasers

Luc Thévenaz, Philippe Robert

A novel measurement scheme is presented for injection locking experiments with semiconductor lasers. In the method, the light generated by the master laser travels through an optical fiber before being injected into the cavity of the slave laser. Using the ...

IEEE, Piscataway, NJ, USA1998

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