Infrared and Submillimeter-Wave Waveguides

Kneubuehl, F. K.; Affolter, E.

doi:10.1016/b978-0-12-147701-1.50012-9

Cited by 15 publications

(2 citation statements)

References 144 publications

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“…Most interestingly, this line was among the first submillimeter laser transitions detected in the laboratory (Mathias, Crocker, & Wills 1965) and is part of the extensively studied (11 1 0)/(04 0 0) coriolis-perturbed system around the J= 9 to 11 rotational levels in these states (Gebbie, Stone, & Findlay 1964;Lide & Maki 1967). These lasers, which are produced in gas discharges, were intensely studied in the early years of molecular laser research (for reviews see, e.g., Chantry 1971;Kneubühl & Sturzenegger 1980;Pichamuthu 1983). This results in rotation-vibration interactions, i.e.…”

Section: A Hcn Submillimeter Lasermentioning

confidence: 99%

A Submillimeter HCN Laser in IRC +10216

Schilke

Mehringer

Menten

2000

The Astrophysical Journal

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We report the detection of a strong submillimeter-wavelength HCN laser line at a frequency near 805 GHz toward the carbon star IRC +10216. This line, the J=9-8 rotational transition within the (0400) vibrationally excited state, is one of a series of HCN laser lines that were first detected in the laboratory in the early days of laser spectroscopy. Since its lower energy level is 4200 K above the ground state, the laser emission must arise from the innermost part of IRC +10216's circumstellar envelope. To better characterize this environment, we observed other, thermally emitting, vibrationally excited HCN lines and found that they, like the laser line, arise in a region of temperature approximately 1000 K that is located within the dust formation radius; this conclusion is supported by the line width of the laser. The (0400), J=9-8 laser might be chemically pumped and may be the only known laser (or maser) that is excited both in the laboratory and in space by a similar mechanism.

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Section: A Hcn Submillimeter Lasermentioning

confidence: 99%

A Submillimeter HCN Laser in IRC +10216

Schilke

Mehringer

Menten

2000

The Astrophysical Journal

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“…However, they yielded only a limited number of oscillation lines. 93) In contrast, photoexcited molecular lasers developed in 1970 achieved at least 4000 oscillation lines. Such lasers are still used for some purposes, such as measurement of the density of nuclear fusion plasma, that only require monochromatic laser lines.…”

Section: Generation Of Thz Waves By Electronics Electron Tubes and Ac...mentioning

confidence: 99%

Development and future prospects of terahertz technology

Hangyo

2015

Jpn. J. Appl. Phys.

150

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Recently, the technology of terahertz (THz) waves, which have been called undeveloped electromagnetic waves, has been making remarkable progress. In addition to the technologies of generating THz waves using lasers, which are promoting this progress, advances are being made in THz generation methods using electronic devices and accelerators, and various THz optical components have been actively developed. The applications of THz technology are also becoming increasingly widespread. In this report, I will review these developments and discuss the future prospects of this field.

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Helical and Linear Distributed Feedback Lasers

Kneubühl

1986

Trends in Quantum Electronics

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Infrared and Submillimeter-Wave Waveguides

Cited by 15 publications

References 144 publications

A Submillimeter HCN Laser in IRC +10216

A Submillimeter HCN Laser in IRC +10216

Development and future prospects of terahertz technology

Helical and Linear Distributed Feedback Lasers

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