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OptoSystem Diode Bar Stacker & Unstacker VDSB3000

Highlights of the OptoSystem Laser Diode Bar Stacker & Unstacker VDSB3000


Stacking and Unstacking in a Single Tool.

All-rounder not only prepares the stacks before coating but also carefully dismantles the stack and places the coated bars back on a tape.

Reliable Bar Separation.

Multiple mechanisms ensure that bars that have baked together will separate damage-free.

Down to 150µm cavity.

Bar geometry adjustment from 150µm to 6000µm cavity.

Allrounder Tool For Stacking And Unstacking

Description of the OptoSystem Laser Diode Bar Stacker & Unstacker VDSB3000

An automatic bar stacker is a big relief in production because this is a difficult task to learn and to execute when done manually. To develop human skills for this requires a lot of time and training. Unstacking is a very delicate task as well since the diode bars often are at the peak of their fabrication value and yield losses are very painful. The bar stacker and unstacker VDSB3000 is perfect if you need to expand or improve your stacking capability with a reliable tool that does all the difficult jobs for you. This tool is our all-rounder that combines both tasks: Stacking and unstacking. Before coating, the tool picks up the laser bars from a tape and fills them up into the holding jig. The jig is easy to handle and is designed to allow plasma coating on both facets. After the coating just place the jig back on the VDSB3000 and the unstacker function will automatically pick up the laser bars from the stack, ensure that they separated, and create an array of coated bars back on the tape.


Why do you still offer stand-alone stacker and unstacker tools at all?

Although the combination Stacker&Unstacker tool VDSB3000 is very useful because it combines both functions, there are still advantages of a dedicated stacker and a dedicated unstacker. A stacker tool such as the VJSB3000 has a different geometry that is optimized for stacking the bars: The placement accuracy of the bars is significantly improved enabling a tight overcoating allowance and a larger count of bars in the jig. The ability to stack more bars on a single jig with the stacker tool VJSB3000, therefore increasing production capacity. Another unique advantage is, that it is easier to handle the jig for an operator when using a dedicated tool such as the VJSB3000 because single task tools are able to additionally close-off the jig, which can require some skills from an operator to complete. We do recommend to combine the unstacker with an optical inspection function though.

How many bars can be stacked and unstacked reliably in a single jig?

To confirm an exact number tests should be done first. It also depends on the cavity length, the thickness of the bars and the spacers, the used substrate material and on other parameters such as your flexibility to adapt the jig to our recommendations. Our estimate is that for a standard configuration between 60 and maybe 100 diode bars can be stacked on a single jig. Our engineers will be happy as well to discuss your specific needs and share their decade long expertise with you. A deep hands-on training at your location is part of our delivery. Prior to that it is best if you contact us and send some samples. You are most welcome to consult us!

Do you provide the jigs too?

Yes, the jig is a critical part of the VDSB3000 and we will be happy to offer several designs that will adapt to your individual needs. If you have a design already that is implemented into your factory, we will be glad to discuss how it can be adjusted to fit in your existing tools and the VDSB3000.

Do you process my wafers?

Right now we do not have the capability to act as an OEM manufacturer but we are looking for partners to be able to do so in the future. If you want to try out how our tools work on your devices, please get in touch and send us some samples. We are eager to show off and learn about new applications. If you own OptoSystem tools and would like to offer OEM services, please get in touch too.

Why OptoSystem?

OptoSystem’s tools are built to last and very robust with a focus on performance and quality. OptoSystem has been around for for more than 40 years and has earned a reputation for excellent tools in the semiconductor industry across the world.

Who or What is Tomosemi?

TomoSemi is a manufacturer’s representative appointed by OptoSystem to promote OptoSystem’s products and to help customers in Europe since we are local.


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