Compact high-resolution spectral phase shaper

Postma, S.; Walle, Peter van der; Offerhaus, Herman L.; Hulst, Niek F. van

doi:10.1063/1.2140465

Cited by 13 publications

(10 citation statements)

References 27 publications

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“…Orthogonally polarized pump and probe pulses are derived from a mode‐locked Ti:Sapphire laser with a pulse duration of 150 fs at a wavelength of 720 nm and a repetition rate of 76 MHz. After cutting out subspectra using a grating pulse shaper 44 the pulses have a duration of about 1 ps and a spectral width of 4 meV. The pump pulses are delayed by a time Δ t with respect to the probe pulses using a mechanical delay stage before the two beams are recombined again by a polarizing beamsplitter.…”

Section: Transient Differential Reflection Spectroscopy Of Single Qmentioning

confidence: 99%

Ultrafast coherent spectroscopy of a single self‐assembled quantum dot

Wolpert

Dicken

Wang

et al. 2012

Physica Status Solidi (b)

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The controlled interaction of several quantum dots (QDs) mediated by plasmonic or photonic nanostructures promises interesting new functionality in the fields of quantum computing and telecommunication. Ultrafast laser pulses can be used to write and read out the state of the QD. We review ultrafast coherent spectroscopy of single QDs. The focus of this article is on the technique of transient reflection spectroscopy which can be applied to a broad range of samples and devices. It only requires optical access to a single quantum system next to a reflecting surface. We demonstrate the versatility of our approach by presenting several quantum optical studies such as Rabi oscillations, perturbed free induction decay, and quantum beats from an entangled excitonic state in weakly absorbing GaAs QDs. We expect this experimental method to make coherent experiments possible in elaborate devices where quantum emitters are interacting with a complex environment such as plasmonic waveguides or antennas. 1 Introduction In recent years substantial efforts were made to produce matter quantum bits (standing qubits) in various systems [1]. These quantum mechanical two-level systems can be realized by atom-like systems such as single molecules, nitrogen vacancy centers in diamond or semiconductor quantum dots (QDs). Photons are acting as flying quantum bits (qubits) which can be used to transfer quantum information from one stationary qubit to the next and in this way form the connections in a quantum network. Artificial atoms are coupled to cavities or waveguides in order to establish an interface between photons and excitations in matter. In order to produce new photonic devices with novel functionalities one needs not only an efficient quantum system that can be addressed by photons but also controlled coupling to the interconnects.Semiconductor QDs are appealing systems in this context as they are a pure solid-state system which makes them stable, long-lived, and compatible with conventional 2D fabrication techniques. Dephasing times of neutral excitons in QDs can be on the order of several hundreds of

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Section: Transient Differential Reflection Spectroscopy Of Single Qmentioning

confidence: 99%

Ultrafast coherent spectroscopy of a single self‐assembled quantum dot

Wolpert

Dicken

Wang

et al. 2012

Physica Status Solidi (b)

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“…For the absolute positioning of phase profiles the complete number of pixels can be used, which implies a positioning precision of 14 GHz (0.5 cm -1 ). Further details of the spectral shaper setup can be found in an earlier publication [2]. The shaped Ti:Sapphire pulses are used as the pump and probe pulses in the CARS process.…”

Section: Setupmentioning

confidence: 99%

Femtosecond spectral phase shaping for CARS spectroscopy and imaging

Postma

Rhijn

Korterik

et al. 2009

Springer Series in Chemical Physics

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Abstract. Coherent Anti-Stokes Raman Scattering (CARS) is a third-order non-linear optical process that provides label-free, chemically selective microscopy by probing the internal vibrational structure of molecules. Due to the resonant enhancement of the CARS process, faster imaging is possible compared to Raman microscopy. CARS is unaffected by background fluorescence, but the inherent non-resonant background signal can overwhelm the resonant signal. We demonstrate how simple phase shapes on the pump (and probe) beam reduce the background signal and enhance the resonant signal. We demonstrate chemically selective microscopy using these shaped pulses on plastic beads.

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“…For the absolute positioning of phase profiles the complete number of pixels can be used, which implies a positioning precision of 0.47 cm -1 (14 GHz). Further details and description of the calibration of the spectral shaper setup can be found in an earlier publication [21]. The pulses of the Ti:Sapphire laser are pre-compressed by an external prism compressor (this prevents wasting degrees of freedom on the shaper to compensate simple dispersion) and shaped to be Fourier limited (at the position of the sample) by the spectral phase shaper using an evolutionary learning algorithm [22], with SHG signal from a thin (10 µm) BiB 3 O 6 crystal at the location of the sample as feedback.…”

Section: Setupmentioning

confidence: 99%

Application of spectral phase shaping to high resolution CARS spectroscopy

Postma¹,

Rhijn²,

Korterik³

et al. 2008

Opt. Express

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By spectral phase shaping of both the pump and probe pulses in coherent anti-Stokes Raman scattering (CARS) spectroscopy we demonstrate the extraction of the frequencies, bandwidths and relative cross sections of vibrational lines. We employ a tunable broadband Ti:Sapphire laser synchronized to a ps-Nd:YVO mode locked laser. A high resolution spectral phase shaper allows for spectroscopy with a precision better than 1 cm -1 in the high frequency region around 3000 cm -1. We also demonstrate how new spectral phase shaping strategies can amplify the resonant features of isolated vibrations to such an extent that spectroscopy and microscopy can be done at high resolution, on the integrated spectral response without the need for a spectrograph.

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Compact high-resolution spectral phase shaper

Cited by 13 publications

References 27 publications

Ultrafast coherent spectroscopy of a single self‐assembled quantum dot

Ultrafast coherent spectroscopy of a single self‐assembled quantum dot

Femtosecond spectral phase shaping for CARS spectroscopy and imaging

Application of spectral phase shaping to high resolution CARS spectroscopy

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