Syntec Optics’ Post

Gallium nitride (GaN) vertical-cavity surface-emitting lasers (VCSELs) are semiconductor laser diodes with promising applications in various fields, including adaptive headlights, retinal scanning displays, point-of-care testing systems, and high-speed visible light communication systems. Their high efficiency and low manufacturing costs make them especially appealing for these applications. GaN-VCSELs are composed of two layers of special semiconductor mirrors, called distributed Bragg reflectors (DBRs), separated by active GaN-semiconductor layers, which form the optical resonant cavity, where laser light is generated. The length of this resonant cavity is crucial for controlling the target laser wavelength, called the resonance wavelength. #lasers #light #resonance #wavelength #communications https://lnkd.in/gNgkrAm8

Introduction to vertical cavity surface emitting semiconductor laser (VCSEL) Vertical external cavity surface-emitting lasers were developed in the mid-1990s to overcome a key problem that has plagued the development of traditional semiconductor lasers: how to produce high-power laser outputs with high beam quality in fundamental transverse mode. Vertical external cavity surface-emitting lasers (Vecsels), also known as semiconductor disc lasers (SDL), are a relatively new member of the laser family. It can design the emission wavelength by changing the material composition and thickness of the quantum well in the semiconductor gain medium, and combined with intracavity frequency doubling can cover a wide wavelength range from ultraviolet to far infrared, achieving high power output while maintaining a low divergence Angle circular symmetric laser beam. The laser resonator is composed of the bottom DBR structure of the gain chip and the external output coupling mirror. This unique external resonator structure allows optical elements to be inserted into the cavity for operations such as frequency doubling, frequency difference, and mode-locking, making VECSEL an ideal laser source for applications ranging from biophotonics, spectroscopy, laser medicine, and laser projection. The resonator of the VC-surface emitting semiconductor laser is perpendicular to the plane where the active region is located, and its output light is perpendicular to the plane of the active region, as shown in the figure.VCSEL has unique advantages, such as small size, high frequency, good beam quality, large cavity surface damage threshold, and relatively simple production process. It shows excellent performance in the applications of laser display, optical communication and optical clock. #Optical #photonics #semiconductor #Optics #opticalcenter #SiliconPhotonics #photodetectors #optomechanics #laser #Quantum Read more: https://lnkd.in/gCk5hGPt

Professionals in the photonics industry, check out this detailed guide on dye lasers. Covering everything from fundamental principles to cutting-edge applications, this resource is invaluable for those looking to enhance their technical knowledge or integrate dye laser technology in their work: https://lnkd.in/eCQm6jjT #PhotonicsEngineering #TechDevelopment

High accuracy? ✅ Low noise? ✅ Turn-key operation? ✅ Menlo Systems's Optical Frequency Combs are the ultimate tools for precise measurements. Highlights: ⚙️ FC1500-ULNplus: Ultra-low noise, transfers stability like a boss (10⁻¹⁹ level!). ⚙️ Mid-IR Comb: Figure 9® tech unlocks fingerprint region for high-precision spectroscopy. ⚙️ FC1000: Compact, portable, perfect for on-the-go frequency metrology. ⚙️ SmartComb: 19" powerhouse, automated comb for 14-digit frequency with just a laser input. ⚙️FC1500-ULNnova: Redesigned core for ultimate robustness and reduced noise. #optics #frequencycombs #metrology #highprecision #technology #optics #photonics https://lnkd.in/gCFzhgzf

If you are interested, have a look in our new article in Photonics Spectra as part of the April 2024 issue: "High-Power Lasers Open Applications and Drive Component Demand"

The semiconductor industry needs to fit ever more devices per unit area to improve their performance; hence, a trend towards increasingly complex structures by varying material combinations and 3D geometries with increasing aspect ratios. The new materials used may be optically opaque, posing problems for traditional optical #metrology methods. TNO has developed a novel technology for semicon metrology and inspection to overcome this challenge: #HaWaCAM (Half Wavelength Contact Acoustic Microscopy). HaWaCAM is based on the integration of an acoustic transducer on a custom probe that comes in contact with the top of a an inspected sample. With this new concept, ultrasound frequencies in the gigahertz (GHz) range are achieved, allowing better penetration/resolution trade-offs. Want to know more? ➡️https://lnkd.in/eWyRbV3e #AcousticMetrology #GHzAcoustics #MetrologyAndInspection #semicon

Looking for photonic chips? ALUVIA Photonics offers a thin Al2O3 Multi Project Wafer run for UV-VIS applications and a thick Al2O3MPW for near-IR applications. Think of photonic chip applications for quantum technology, life sciences, telecommunications, amplifiers, lasers, and sensing. This is a great opportunity to have access to affordable, low-loss photonics chips on a novel material platform with a broad operating spectral window ranging from 200 nm to the mid-IR (~3 um). Furthermore, this platform has the possibility of optical amplification by rare-earth ion doping of the material. Interested? Subscribe at https://lnkd.in/e626penq. Mask submission deadline is 20 June. Too early? No worries, ALUVIA Photonics does an MPW run every quarter, and your next opportunity runs until August 31. #PhotonicChips #AluviaPhotonics #PhotonDeltaPartner

The fabrication of a single-mode InGaAsP/InP buried heterostructure (BH) laser represents an important step forward in the field of semiconductor lasers: https://ow.ly/lPrv50RjikI This Optics Letters [#OPG_OL] Spotlight Summary covers a method that streamlines the fabrication process while maintaining and enhancing laser performance. The technique offers potential advancements in optical communications, laser sensing, and the integration of light sources on silicon photonic chips. Spotlight Summary by Yating Wan #Lasers #LaserScience

Here is an arXiv posting of a recent submission to the IEEE Journal of Lightwave Technology: "2 μm Watt-level Fiber Amplifiers, Lasers, and ASE Sources Pumped by Broadband ASE Pumps", https://lnkd.in/eBYdjA58

Focusing ultra-intense lasers to a single wavelength https://lnkd.in/eUY3WNng