Some Photographic Studies of the Light Output of an Intracavity-Modulated Gas Maser

Metadata

Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Using a high-speed rotating mirror to sweep the image, we photographed the light output from a helium-neon gas maser with and without intracavity modulation at the locking frequency fo, which corresponds to the reciprocal of the round-trip travel time for light within the maser, and which also equals the cavity mode spacing. When the maser was locked, the photographic record showed regular pulses. The light level was 1,500 times the minimum required to record individual dots. When the maser was not locked, the photographs showed beats at harmonics of the mode spacing. The amplitudes of the beat frequencies varied most irregularly from moment to moment, sometimes changing noticeably in less than half a microsecond and radically in less than a millisecond. We found no evidence of reciprocity failure for Eastman Kodak Type IF emulsion to the accuracy of the energy measurements (i.e., to a factor of 2 up or down from the mean), for exposure times from 1 nanosec to 30 sec.
Publication Date: 1965-12-01
DOI: 10.5594/J05960
Link: https://doi.org/10.5594/J05960
Author(s): L. E. Hargrove, J. S. Courtney-Pratt

Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J05960.json

Reference this Doc

Plain text (ISO 690 compliant)

Preview:

L. E. Hargrove and J. S. Courtney-Pratt; Some Photographic Studies of the Light Output of an Intracavity-Modulated Gas Maser, Journal of the SMPTE ( Volume: 74, Issue: 12, December 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J05960

Snippet:

L. E. Hargrove and J. S. Courtney-Pratt; Some Photographic Studies of the Light Output of an Intracavity-Modulated Gas Maser, Journal of the SMPTE ( Volume: 74, Issue: 12, December 1965); SMPTE, 1965. Available at https://doi.org/10.5594/J05960

HTML (ISO 690 compliant)

Preview:

Snippet:

<span class="citation">L. E. Hargrove and J. S. Courtney-Pratt; <cite>Some Photographic Studies of the Light Output of an Intracavity-Modulated Gas Maser</cite>, Journal of the SMPTE ( Volume: 74, Issue: 12, December 1965); SMPTE, 1965. Available at <a href="https://doi.org/10.5594/J05960" target="_blank" rel="noopener">https://doi.org/10.5594/J05960</a></span>

SMPTE's HTML Pub

Preview:

Snippet:

<li>
L. E. Hargrove and J. S. Courtney-Pratt; <cite id="bib-10-5594-j05960">Some Photographic Studies of the Light Output of an Intracavity-Modulated Gas Maser</cite>, Journal of the SMPTE ( Volume: 74, Issue: 12, December 1965); SMPTE, 1965
<span class="doi">10.5594/J05960</span>
</li>