Simultaneous focused laser differential interferometry and high-speed schlieren in a Mach 6 flow
Sign Up to like & getrecommendations! Published in 2021 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/abf67a
Abstract: An instrument is demonstrated that is capable of simultaneous and independent flow density fluctuation measurements over the same line-of-sight by combining two optical techniques: focused laser differential interferometry (FLDI) and high-speed schlieren (HSS). The FLDI… read more here.
Keywords: differential interferometry; focused laser; laser differential; speed schlieren ... See more keywords
Design, alignment, and calibration of a focused laser differential interferometer.
Sign Up to like & getrecommendations! Published in 2021 at "Applied optics"
DOI: 10.1364/ao.435112
Abstract: Methods are presented for systematic selection of optical components and dimensions for the design of both single- and double-focused laser differential interferometers (FLDIs). Step-by-step instructions for the assembly and alignment of each FLDI component are… read more here.
Keywords: focused laser; design alignment; laser differential; alignment calibration ... See more keywords
Two-point, parallel-beam focused laser differential interferometry with a Nomarski prism.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.59.000244
Abstract: A Nomarski polarizing prism has been used in conjunction with a focused laser differential interferometer to measure the phase velocity of a density disturbance at sampling frequencies ≥10MHz. Use of this prism enables the simultaneous… read more here.
Keywords: point parallel; focused laser; prism; two point ... See more keywords
Ultra-sensitive focused laser differential interferometer using balanced detection.
Sign Up to like & getrecommendations! Published in 2025 at "Optics letters"
DOI: 10.1364/ol.569353
Abstract: Balanced detection is demonstrated to be a simple method for achieving shot-noise-limited measurements with a focused laser differential interferometer (FLDI). Both polarization components of the signal beam are separately detected, and differential amplification of the… read more here.
Keywords: detection; balanced detection; focused laser; laser differential ... See more keywords
Focused Laser Differential Interferometry with Contoured Tunnel Windows
Sign Up to like & getrecommendations! Published in 2021 at "AIAA Journal"
DOI: 10.2514/1.j060081
Abstract: A unique focused laser differential interferometry (FLDI) configuration designed to work with contoured windows was developed for use with the Boeing/U.S. Air Force Office of Scientific Research Ma... read more here.
Keywords: interferometry contoured; differential interferometry; focused laser; contoured tunnel ... See more keywords