Dr. Vidi A. Saptari
Director of Engineering at MKS Instruments Inc
SPIE Involvement:
Author | Instructor
Publications (5)

SPIE Journal Paper | 1 November 2005
JBO Vol. 10 Issue 06
KEYWORDS: Glucose, Plasma, Calibration, Spectroscopy, Optical filters, Absorption, Quality measurement, Blood, Near infrared, Tissues

Proceedings Article | 18 June 2004
Proc. SPIE. 5325, Optical Diagnostics and Sensing IV
KEYWORDS: Signal to noise ratio, Near infrared, Optical filters, Glucose, Calibration, Blood, Spectroscopy, Absorbance, Urea, Absorption

SPIE Press Book | 3 November 2003
KEYWORDS: Signal to noise ratio, Sensors, Mirrors, Interferometers, Spectrometers, Fourier transforms, Actuators, Signal detection, Spectral resolution, Data acquisition

Proceedings Article | 22 November 2000
Proc. SPIE. 4163, Optical Techniques and Instrumentation for the Measurement of Blood Composition, Structure, and Dynamics
KEYWORDS: Signal to noise ratio, Near infrared, Optical filters, Glucose, Tissues, Sensors, Blood, Interference (communication), Absorbance, Absorption

Proceedings Article | 22 November 2000
Proc. SPIE. 4163, Optical Techniques and Instrumentation for the Measurement of Blood Composition, Structure, and Dynamics
KEYWORDS: Signal to noise ratio, Near infrared, Mirrors, Sensors, Spectroscopy, Fourier transforms, Interference (communication), Spectral resolution, Signal detection, Absorption

Course Instructor
SC314: Fourier Transform Spectroscopy Instrumentation Engineering
This course teaches the fundamentals of Fourier transform spectroscopy instrumentation (Michelson interferometer-based spectrometers). The first part provides an introduction to the design of Fourier transform spectrometers, which include the optical, mechanical and the electrical design elements. Discussions include the designs and/or appropriate selections of light sources, photo-detectors, optics, and interferometer drive systems, signal processing electronics and post-processing algorithms. The second part focuses on hardware and procedural optimizations that are done to improve experimental results in various applications. Understanding and identification of the limiting source(s) of noise enable smart and justifiable approaches to increase signal-to-noise ratio.
SC800: Instruments for Light Spectroscopy
This course teaches the instrumentation fundamentals of popular UV – IR spectrometers including the Fourier transform spectrometer, monochromator, spectrograph, filter-based spectrometer and tunable laser spectrometer. The course aims at providing attendees with quantitative and objective methods to compare key performance metrics of the various spectrometers mentioned above. The metrics include signal-to-noise ratio, sensitivity, detection limit, dynamic range, spectral bandwidth and resolution. You will learn the design trade space of each instrument and tradeoffs between the instruments. Practical considerations including cost, ruggedness and operation requirements are also discussed. Real-world examples encompassing UV – IR spectrum and various spectroscopy applications are included.
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