• Lasers & Sources

    The laserfocusworld.com Lasers & Sources channel features articles and other content that discuss the design and applications of all types of lasers, amplifiers, and other advanced sources like LEDs.

    Highlights

    Credit: Aeluma, Inc.
    Aeluma’s 300-mm III-V-on-silicon deposition (left) and selective-area heteroepitaxy on 300-mm silicon photonics (right).
    Bei Shi
    April 1, 2025
    How can we scale optical interconnect technology for next-gen systems? One solution is silicon photonics that integrate quantum dot optical gain.
    Credit: Milad Abolhasani
    A new method to tune quantum dot bandgaps taps light—which speeds the process, and is more energy-efficient and environmentally sustainable. (Credit: Milad Abolhasani)
    Sally Cole Johnson
    March 26, 2025
    Existing methods to tune bandgaps of perovskite quantum dots—which are less than ideal because they rely on chemical modifications or high-temperature reactions—just got an environmenta...
    © Endeavor Business Media
    lfw_ftpepic_interview_2graphiclandscape
    In Episode 44 of Following the Photons: A Photonics Podcast, Antonio Castelo, EPIC’s technology manager for Biomedical and Lasers, talks with Alexander Weigl, head of product ...
    (Image credit: Chromacity)
    chromacity
    March 25, 2025
    The Chromacity 520 femtosecond laser has use as a fixed wavelength source to deliver ultrashort pulses with pulse duration of 100 to 200 fs.
    (Credit: Phlux Technology)
    FIGURE 1. The functional elements of a time-of-flight (ToF) laser rangefinder (LRF) where the return signal is detected by an avalanche photodiode (APD).
    Ben White
    March 21, 2025
    By offering improved sensitivity, extended range, and faster recovery times, the latest generation of avalanche photodiodes (APDs) are poised to revolutionize the field of distance...

    Recommended

    FIGURE 1. Modeling of femtosecond pulse propagation can be achieved by solving the nonlinear Schrödinger equation via COMSOL; the inset is an image of a filament of plasma [2].
    George A. Chappell
    March 20, 2025
    Plasma channels produced by self-focusing ultrashort laser pulses can disrupt and deflect laser beams and may offer a future defense against adversarial laser systems.
    (Image credit: Nativo Calavera)
    FIGURE 1. Transforming bacteria into solar-powered lasers: we extract light-harvesting structures from bacteria (left), enhance them with proprietary specially engineered lasing units (middle), and place them into a lasing cavity (right) to create a new type of laser that runs directly on sunlight. The natural light-gathering rings (green/purple) of purple bacteria measure 60-nm across and achieve near-perfect efficiency in energy transfer of captured photons.
    Erik Gauger
    Feb. 7, 2025
    A new way to power space missions piggybacks on bacteria's efficient light-harvesting abilities to create sunlight-powered lasers—and could enable power transmission between satellites...
    (Image credit: TeraXion)
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    TeraXion Inc
    Feb. 5, 2025
    The VINCI-1064 femtosecond fiber laser has a SESAM-free oscillator architecture.
    (Image credit: Energetiq)
    energetiq
    The EQS-10 EUV light source delivers up to 4x the energy per pulse with an operating frequency up to 5 kHz.
    (Image credit: Coherent)
    coherent
    Coherent Corp
    Jan. 22, 2025
    The ARM FL20D fiber laser incorporates a center beam and two coaxial ring beams, all with independent control.