Vibration-resistant direct-phase-detecting optical interferometers

Carlson, Timothy B.; Denzer, Steven M.; Greenlee, T. R.; Groschen, Robert P.; Peterson, Richard; Robinson, Glen M.

doi:10.1364/ao.36.007162

Cited by 10 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Heterodyne phase detection schemes can make sensitive measurements of small or rapidly fluctuating phase change. [32][33][34] As shown in Fig. 4, one arm of the Mach-Zehnder interferometer is shifted by 40 MHz by use of an acousto-optic modulator.…”

Section: Methodsmentioning

confidence: 99%

Advances in laser cooling of thulium-doped glass

et al. 2003

View full text Add to dashboard Cite

Recent developments in cooling thulium-doped heavy-metal fluoride glass are presented. Thulium-doped fluorozirconate (ZBLANP) is cooled to 19 K below ambient with a multiple-pass pump scheme. This represents over an order of magnitude increase from the previously reported single-pass geometry. The results agree with a simple model for anti-Stokes fluorescence cooling that includes considerations of quantum efficiency and parasitic heating mechanisms. Issues relating to a practical optical refrigerator are examined, including a general model for the effects of multiple pump passes.

show abstract

Section: Methodsmentioning

confidence: 99%

Advances in laser cooling of thulium-doped glass

et al. 2003

View full text Add to dashboard Cite

show abstract

“…Although the general strategy is to perform SWLI on a vibration-isolation table to minimize vibration, there exist unavoidable and undesirable vibrations in an uncontrollable shop floor situation with air disturbance coming from an air conditioner and machine acoustic noises as well as human voices. To resolve this critical issue, some in-situ techniques and strategies have been developed, such as active vibration isolation using a fringe locking mechanism, shortening measurement time, and performing simultaneous PSI, [199][200][201][202][203][204][205][206][207][208][209][210][211][212][213][214][215]. Early research was devoted to active feedback in laser interferometry, either by using adaptable wavelength modulation [201,[212][213][214][215] or active control of the reference arm [202][203][204][205][206][207].…”

Section: Vibration-resistant Capabilitymentioning

confidence: 99%

An insight on optical metrology in manufacturing

Shimizu

Chen

Kim

et al. 2020

Meas. Sci. Technol.

View full text Add to dashboard Cite

Optical metrology is one of the key technologies in today's manufacturing industry. In this article, we provide an insight into optical measurement technologies for precision positioning and quality assessment in today's manufacturing industry. First, some optical measurement technologies for precision positioning are explained, mainly focusing on those with a multi-axis positioning system composed of linear slides, often employed in machine tools or measuring instruments. Some optical measurement technologies for the quality assessment of products are then reviewed, focusing on technologies for form measurement of products with a large metric structure, from a telescope mirror to a nanometric structure such as a semiconductor electrode. Furthermore, we also review the state-of-the-art optical technique that has attracted attention in recent years, optical coherence tomography for the non-destructive inspection of the internal structures of a fabricated component, as well as super-resolution techniques for improving the lateral resolution of optical imaging beyond the diffraction limit of light. This review article provides insights into current and future technologies for optical measurement in the manufacturing industry, which are expected to become even more important to meet the industry's continuing requirements for high-precision and high-efficiency machining.

show abstract

“…Highly dynamic variations in air density from the initial shock wave and compressible flow dynamics produce changes in the refractive index, which are observed as changes to the optical path length or as changes to the phase of the laser light. Such a heterodyne system has diverse applications, including surface metrology 4 and fluid shock wave 1,5 diagnostics. An RF mixer and LABVIEW VI decode and extract these phase shifts as a function of time.…”

Section: Phase-detecting Interferometrymentioning

confidence: 99%

Undergraduate Advanced Laboratory Studies on Supersonic Nozzle Flow

Stein¹,

Fredrick²,

Peterson³

2015

2015 Conference on Laboratory Instruction Beyond the First Year

Self Cite

View full text Add to dashboard Cite

Undergraduate studies are carried out in the advanced laboratory to examine the supersonic flow from an axisymmetric converging-diverging nozzle. Flow is initiated by the rupture of a diaphragm and exits from a small nozzle (with a 0.95 cm exit diameter) into standard atmospheric conditions from a one gallon (3.875 liter) tank. Compressible flow simulations are carried out for the nozzle and comparisons are made to experiments based on high-speed video shadowgraph imaging and dual-beam interferometry. The multifaceted approach based on simulation and experiments exploits the distinct strengths of the different methods to provide a more comprehensive description of the nozzle flow than is achievable by the individual approaches.

show abstract

Vibration-resistant direct-phase-detecting optical interferometers

Cited by 10 publications

References 14 publications

Advances in laser cooling of thulium-doped glass

Advances in laser cooling of thulium-doped glass

An insight on optical metrology in manufacturing

Undergraduate Advanced Laboratory Studies on Supersonic Nozzle Flow

Contact Info

Product

Resources

About