Search
Menu
PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

Two VECSEL Chips Are Better than One

Facebook X LinkedIn Email
Resonator with two chips produces nearly twice the power of a single-chip laser.

Breck Hitz

Invoking a concept that dates from the early days of Nd:YAG lasers, when engineers aligned multiple laser rods in the same resonator, a collaboration between researchers in the US and Germany has demonstrated a technique of coherently combining the outputs of two vertical external cavity surface-emitting laser (VECSEL) chips to generate almost twice as much power as either chip alone can produce. Optically pumped VECSELs produce high output powers in low-divergence, round output beams, but their power is ultimately limited by overheating. Overheating can be alleviated by expanding the...Read full article

Related content from Photonics Media



    Articles


    Products


    Photonics Handbook Articles


    White Papers


    Webinars


    Photonics Dictionary Terms


    Media


    Photonics Buyers' Guide Categories


    Companies
    Published: February 2007
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    resonator
    A resonator is a device or system that exhibits resonance, which is a phenomenon that occurs when an external force or stimulus is applied at a specific frequency, causing the system to oscillate with increased amplitude. Resonators are found in various fields and can take different forms depending on the type of waves involved, such as mechanical waves, acoustic waves, electromagnetic waves, or optical waves. Key points about resonators: Resonance: Resonance is a condition where a...
    vertical external cavity surface-emitting laser
    A laser that has a surface-emitting semiconductor gain element coupled to an external mirror designed to complete the laser resonator. VECSELs can be electrically or optically pumped. The extended cavity can emit high power from a relatively large emitting area.
    diode lasersnanoNd:YAG lasersphotonicsResearch & TechnologyresonatorTech Pulsevertical external cavity surface-emitting laserLasers

    We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.