[Analysis Case] Evaluation of Carrier Distribution in Near-Infrared VCSEL Using SMM
We can consistently perform everything from disassembly and processing of the implemented product to measurement of the diffusion layer.
We disassembled a near-infrared VCSEL (vertical-cavity surface-emitting laser) implementation to extract a tiny chip, and after cross-section processing, we conducted SMM measurements. A high-resistance current confinement layer was observed surrounding the aperture of the VCSEL. Additionally, near the active layer, films of different materials were stacked, and this composition was measured as a contrast. Contrast was also confirmed within layers of the same composition, which is believed to reflect differences in carrier concentration and band bending.
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Analysis of optical devices.
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MST is a foundation that provides contract analysis services. We possess various analytical instruments such as TEM, SIMS, and XRD to meet your analysis needs. Our knowledgeable sales representatives will propose appropriate analysis plans. We are also available for consultations at your company, of course. We have obtained ISO 9001 and ISO 27001 certifications. Please feel free to consult us for product development, identifying causes of defects, and patent investigations! MST will guide you to solutions for your "troubles"!
