But as the stoichiometry varies so too does its lattice constant. It is relatively common knowledge among laser engineers that the stoichiometry of the diode material (the relationship between the relative quantities of the base elements making up the material structure) determines its bandgap energy and therefore it’s center wavelength. To understand the intrinsic stresses and strains within a laser diode bar, it is essential to first take a step back and understand the importance of lattice matching between the diode and its substrate. For this reason, we are going to focus our attention on both intrinsic and extrinsic stress in the diode, and how each affects the performance and lifetime of the diode. With modern day diode bars, thermal management, mechanical stress, and material defects introduced by the mounting/packaging process are far more critical to their lifetime and performance. Despite the extreme power output of laser diode bars and stacks, which can exceed 2 kilowatts of power in quasi continuous wave (QCW) operation, the facet coating technology has improved to the point where it can handle intensities well over 20MW/cm 2 making catastrophic optical damage (COD) no longer a limiting factor. In this application note, we plan to combine these two topics and look at one of the key factors that affects laser diode bar lifetime – stress and strains. We stock an extensive line of multi hole cord grips, but if you don’t see exactly what you need, just contact us for quick turnaround on the multi hole cable gland configuration you need for your job.In the past RPMC has taken a look at laser diode lifetime in both a white paper titled “ How to Improve Laser Diode Lifetime! Advice and Precautions on Mounting,” and an application note called “ Understanding Laser Diode Lifetime.” Additionally, we have explored the fundamental material structure of laser diode bars in a blog post titled “ Understanding Laser Diode Arrays,” back in September of last year. Multiple hole cord grips provide a space saving solution where a variety of cables can pass through the bushing of the same cord connector. Materials include aluminum connectors, steel and stainless steel cord connectors, nylon cord grips and nickel plated brass strain relief connectors. We also offer a variety of cord connector threading’s including NPT thread, Metric thread and PG threaded connectors. One of our top selling items-these nylon strain relief glands are the perfect option for any common wire termination into electrical boxes, control cabinets, medical equipment, data centers, solar combiner box and much more. IP68 and NEMA 6 rated, these nylon cable glands are watertight and can even be used in submersible and wash-down applications. Nylon Dome Cap Cable Glands are made from high strength nylon to outlast continuous flexing and stress on your cable. Our ‘RSR’ series aluminum cord connectors are the top selling metallic cord grip we offer high quality, easy to use and at a price that cannot be beat. Each connector has the option of an additional stainless steel mesh grip for extra support and to control the arc of bend on wire and cable. Buying your cord grips and cable glands from ElecDirect ensure you’ll get professional grade UL/CSA listed products at industry best prices-every time.Īluminum Cord Grip Connectors are light, yet strong and rugged, and made right here in the USA. Our vast selection of materials, thread types, and connector styles has made us a favorite among equipment manufacturers and contractors alike. ElecDirect offers the largest online selection of Cord Grip Connectors and Strain Relief Cable Glands anywhere on the web.
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