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Superresolution microscopy reaches 14 nm

The past decade has seen a growing interest in nitrogen vacancy colour centres (NV-centres) in diamond as prominent candidates for solid state quantum bits, single photon sources and even ultra-sensitive magnetic sensors.

These NV centres can be described by a three level energy scheme (Figure 1) made up of a spin 1 ground state 3A, a spin 1 excited state 3E and a meta stable singlet state 1A. The energy separation between the ground and excited states allows NV to be optically excited with 532 nm light and produces strong fluorescence from 637 nm to 800 nm.

What’s new

  • Laser Quantum Ltd

    Laser Quantum strengthens its position in the femtosecond laser market with the purchase of Venteon Laser Technologies GmbH

    News | 11 Sep 2014

    Laser Quantum is pleased to announce the recent acquisition of Venteon Laser Technologies GmbH, a world leading manufacturer of few-cycle, ultra-short pulse lasers.

  • Figure 2 Basic THz generation principle of the Tera-SED emitters

    TERA-Sed Emitters

    White papers | 5 Nov 2013

    The Laser Quantum Tera-SED is a device emitting intense terahertz (THz) radiation after excitation with a femtosecond (fs) laser pulse. It converts the light from the optical regime into the THz regime with a conversion efficiency of up to 2 x 10-3.

  • Figure 1 Energy level scheme of the NV centre

    Superresolution microscopy reaches 14 nm

    White papers | 5 Nov 2013

    The past decade has seen a growing interest in nitrogen vacancy colour centres (NV-centres) in diamond as prominent candidates for solid state quantum bits, single photon sources and even ultra-sensitive magnetic sensors.

  • Figure 1 A comparison of two femtosecond pulses with the corresponding electric field oscillations

    Shortest CEP stabilised Ti:Sapphire pulse

    White papers | 5 Nov 2013

    Abstract: A dual-output, self-synchronised, CEP-stabilised Ti:sapphire oscillator is presented, with a pulse duration of 4.4fs and a CEP phase noise of < 100 mrad using a Finesse 6 Pure pump laser.

  • Figure 1 The CEP offset of a frequency comb

    CEO/CEP stabilisation of Ti:sapphire femtosecond lasers without AOM

    White papers | 5 Nov 2013

    The carrier-envelope offset frequency and phase of a Ti:sapphire femtosecond laser can be stabilized by directly feeding back to the output power of a 532 nm finesse pure 10 Watt pump laser with CEP feature.

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