A Narrow Linewidth Distributed Feedback Laser Diode with Unique Frequency Modulation Response
Tue, Sep 24, 2024 11:00 AM - 12:00 PM EDT
Distributed feedback (DFB) laser diodes are single-frequency laser sources that can be produced in volume at a low cost. They represent compact and reliable laser technology and are widely used in telecom and sensing applications. They can be modulated in frequency by tiny modulation of their bias current, which is an attractive feature for any photonic system taking advantage of frequency modulation or frequency locking. In this webinar, Patrice Dionne introduces a new narrow linewidth DFB laser diode with a unique frequency modulation response. He discusses the classical limitations of DFB laser diodes and explores the improvements and benefits associated with this innovative new laser through different use cases such as phase and frequency locking loops, linearization of high amplitude frequency chirp, and sudden frequency shifts. He also presents examples of laser integration. Presented by TeraXion.
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Retinal Imaging with Adaptive Optics Optical Coherence Tomography
Wed, Sep 25, 2024 10:00 AM - 11:00 AM EDT
When imaging the living human eye, even if a person has perfect vision, blur caused by ocular aberrations of the eye limits resolution. This blur rapidly fluctuates due to a number of factors, such as the impact of the heartbeat. Consequently, it is not possible using conventional methods, such as customized contact lenses, to correct for this blur. This blur can be corrected by using adaptive optics, which is a technique used in astronomy to remove the blurring effect of the atmosphere when acquiring images with ground-based telescopes. When combining adaptive optics with OCT, it is possible to image the structure and function of the retina at the single-cell level. This technology is revolutionizing the early detection of retinal disease. Given that the retina is a window to the brain, this ability opens the possibility of using retinal imaging for presymptomatic detection of neurodegenerative and psychiatric diseases.
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