Laser Probe Techniques with Adaptive FPGA Device
Laser Probe Techniques with Adaptive FPGA Device
Thursday, November 20, 2025: 10:40 AM
1 (Pasadena Convention Center)
Summary:
This paper introduces an accessible, do-it-yourself (DIY) implementation of laser probe (LP) techniques and their derivatives using a single adaptive field-programmable gate array (FPGA) device. Through several case studies, we demonstrate different integration methods and improvements over conventional ways. First, we investigate two alternative implementations of frequency-domain mapping (FM): one using a software-defined lock-in amplifier, and another using a dual boxcar averager module. Second, we explore a time-domain mapping (TM) technique implemented with the dual boxcar averager. Third, we introduce a customized solution to enhance signal quality in combination with a software-defined lock-in amplifier. Lastly, we examine the use of artificial intelligence (AI), specifically neural networks (NN), to improve LP signal acquisition during real-time signal processing. These approaches reduce barriers to innovation by eliminating the need for substantial upfront legal or financial commitments between collaborating organizations.
This paper introduces an accessible, do-it-yourself (DIY) implementation of laser probe (LP) techniques and their derivatives using a single adaptive field-programmable gate array (FPGA) device. Through several case studies, we demonstrate different integration methods and improvements over conventional ways. First, we investigate two alternative implementations of frequency-domain mapping (FM): one using a software-defined lock-in amplifier, and another using a dual boxcar averager module. Second, we explore a time-domain mapping (TM) technique implemented with the dual boxcar averager. Third, we introduce a customized solution to enhance signal quality in combination with a software-defined lock-in amplifier. Lastly, we examine the use of artificial intelligence (AI), specifically neural networks (NN), to improve LP signal acquisition during real-time signal processing. These approaches reduce barriers to innovation by eliminating the need for substantial upfront legal or financial commitments between collaborating organizations.