optical_trap_feedback_loops.md

(Red‑zone draft)

Optical Trap Feedback Loops#

Feedback systems that stabilize optical tweezers. They are precise but highly nonlinear and sensitive to sample properties.

Dimensional Core (SET)#

• Spin: polarization effects
• Elec: detector and control loops
• Temp: local heating effects

Why Red‑Zone#

Feedback loops operate in a nonlinear, substrate‑dependent regime.
Sample composition, refractive index, and laser stability strongly affect behavior.

Regime Notes#

• pos‑regime: stable samples, controlled optics
• Q‑regime: drift, refractive mismatch
• neg‑regime: heating, trap instability

Containment Notes#

Requires explicit sample‑property and optical‑stability boundaries.