What question did this study set out to answer?

To design and construct a highly flexible infrared spectrograph capable of performing a wide variety of spectral investigations under evacuable conditions.

December 1, 1945Journal of the Optical Society of America

A Versatile Infra-Red Spectrograph

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Authors

RORobert A. OetjenU.S. National Science Foundation

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Overview

Instrument development report demonstrates a multi-configuration infrared spectrograph with automated controls and evacuated housings, indicating enhanced versatility for diverse spectral analyses.

Key Points

To design and construct a highly flexible infrared spectrograph capable of performing a wide variety of spectral investigations under evacuable conditions.
Built an evacuable housing containing two interchangeable prisms and two gratings rotated by a worm wheel and driven by internal induction and Autosyn motors.
Integrated a bypassable foreprism spectrometer, automated slit-width adjustment mechanisms, and a multi-compartment Nernst glower housing serving as vapor and liquid cell mounts.
Employed an evaporated thermocouple radiation detector amplified by a tuned vacuum tube amplifier, modulated with a variable-frequency synchronous shutter and thyratron calibration flasher.
Achieved full remote electrical control of optical components inside the evacuated spectrograph chamber using external motor controllers.
Maintained uniform baseline detector output across varying spectral regions through automated slit adjustments and minimized scattered radiation using metal, mica, and sodium chloride shutters.

Cite This Study

Robert A. Oetjen (1945) studied this question.

synapsesocial.com/papers/6a841669002ab1506fb2974f https://doi.org/10.1364/josa.35.000743

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December 1, 1945Journal of the Optical Society of America

A Versatile Infra-Red Spectrograph

View Full Paper

Ask AI

Bookmark

Authors

RORobert A. OetjenU.S. National Science Foundation

Discussion

Member takes

Overview

Instrument development report demonstrates a multi-configuration infrared spectrograph with automated controls and evacuated housings, indicating enhanced versatility for diverse spectral analyses.

Key Points

To design and construct a highly flexible infrared spectrograph capable of performing a wide variety of spectral investigations under evacuable conditions.
Built an evacuable housing containing two interchangeable prisms and two gratings rotated by a worm wheel and driven by internal induction and Autosyn motors.
Integrated a bypassable foreprism spectrometer, automated slit-width adjustment mechanisms, and a multi-compartment Nernst glower housing serving as vapor and liquid cell mounts.
Employed an evaporated thermocouple radiation detector amplified by a tuned vacuum tube amplifier, modulated with a variable-frequency synchronous shutter and thyratron calibration flasher.
Achieved full remote electrical control of optical components inside the evacuated spectrograph chamber using external motor controllers.
Maintained uniform baseline detector output across varying spectral regions through automated slit adjustments and minimized scattered radiation using metal, mica, and sodium chloride shutters.

Cite This Study

Robert A. Oetjen (1945) studied this question.

synapsesocial.com/papers/6a841669002ab1506fb2974f https://doi.org/10.1364/josa.35.000743

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