Patent ID: 11859963
Assignee: APPLIED MATERIALS ISRAEL LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A non-transitory computer readable medium comprising instructions, which when executed by a processing device, cause the processing device to perform operations comprising:
projecting an optical pump pulse on a semiconductor device comprising a target region, such as to produce an acoustic pulse which propagates within the target region of the semiconductor device, wherein a wavelength of the pump pulse is at least two times greater than a lateral extent of a lateral structural feature of the semiconductor device along at least one lateral direction;
projecting an optical probe pulse on the semiconductor device, such that the probe pulse undergoes Brillouin scattering off the acoustic pulse within the target region;
detecting a scattered component of the probe pulse to obtain a measured signal; and
analyzing the measured signal to obtain a depth-dependence of at least one parameter characterizing the lateral structural feature.