Fundamentals of Nano and Quantum Photonics

A: Picking the wrong call here sends wafers to fab with the slab intact, and that wrecks spectral alignment across the die. Marking the slab as block suppresses etch, so the intended partial etch never happens, driving neff up and dragging the ring off target by multiple FSRs. Catching it at drawing review avoids a full mask respin and months of slip.

A: Getting this wrong leads to emitter-cavity coupling targets that never close, and the experiment dies quietly. Using the normalized mode volume already expressed in (λ/n)^3, the standard Purcell relation drops straight out and lands near three thousand. That aligns expectations for lifetime shortening without inventing extra scaling terms.

A: Skipping this step risks burning a nanowire or blowing a low-noise amplifier before you ever see 2 K. Verifying continuity and insulation with the system warm catches shorts, opens, and ground faults that become catastrophic once biased cold. Everything else waits until the basics are proven safe.

A: Misclassifying this triggers either overkill controls or unsafe complacency, both bad for schedule and people. IEC 60825 treats fully enclosed systems as Class 1 when accessible emission stays below limits, even if internal power is higher. The connector panel is evaluated under normal use, not worst-case abuse.