OSC Colloquium: Jennifer Hastie

    Thursday, April 25, 2019 - 3:30pm - 5:00pm
    Meinel 307

    1630 E. University Blvd.

    3rd Floor Lobby area


    Open to campus and public.


    Speaker: Jennifer Hastie

    Topic: Narrow linewidth semiconductor disk lasers for metrology

    Hosted by: Jerry Moloney

    Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive


    Semiconductor disk lasers (SDLs), also known as vertical-external-cavity surface-emitting lasers (VECSELs), are ‘hybrid’ lasers that offer the wavelength flexibility of semiconductor bandgap engineering with the high brightness, low noise of more conventional solid-state lasers. They are therefore of great interest for those applications that require Watt-level power in a single mode at novel wavelengths and/or very narrow linewidths. In particular they are currently being developed for quantum technologies based on cold atoms/ions, providing high spatial and spectral brightness and low noise at specific transition frequencies. Recently we have demonstrated single frequency 461 nm and 689 nm SDLs, the latter with sub-kHz linewidth, suitable for targeting the first and second stage cooling transitions of neutral strontium atoms to achieve temperatures of a few micro-Kelvin. Such performance has allowed these lasers to be implemented in a neutral strontium optical lattice clock setup, achieving an SDL-cooled magneto-optical trap. In this talk I will review our recent work in continuous wave SDLs, covering broad spectral coverage via novel materials and intracavity frequency conversion (including intracavity-pumped Raman lasers) and active stabilisation for narrow linewidth operation.

    Speaker Bio(s): 

    Jennifer Hastie is a Reader and Research Team Leader at the Institute of Photonics, University of Strathclyde, with a main interest in optically-pumped semiconductor lasers for high spatial and spectral brightness and broad tunability at novel wavelengths.  Next year she will chair the international meeting ‘VECSELs X’ at SPIE Photonics West in San Francisco.


    As a result of the group’s work in the area of narrow linewidth SDLs, Jennifer is the Strathclyde University Lead Investigator for the UK National Quantum Technology Hub in Sensors and Metrology (www.quantumsensors.org), collaborating with Hub Director Prof Kai Bongs of the University of Birmingham to develop lasers for optical clock systems.  The Hub, which also includes leading research groups from the Universities of Glasgow, Nottingham, Southampton and Sussex, is an international centre of excellence that will translate state-of-the-art lab technology into deployable practical devices with the academics working with >60 industry partners to translate quantum technology research into marketable applications.


    Refreshments 3:30pm

    Lecture @ 3:45pm - 5pm