Abstract
In this work, precise frequencies have been measured for two important far-infrared (FIR) laser transitions in methanol. These are optically pumped by the 9P(16) CO2 laser line at an offset of +64 MHz from the line center, using infrared (IR)-millimetrewave (MMW) double resonance (DR) techniques. The two measured FIR lines are at 525,427.902 and 477,790.879 MHz, with an estimated precision of ± 50 kHz. Another line has been observed at 573,025.151 MHz. It corresponds to an absorption transition whose lower level is the upper pumped level. The measurements provide a valuable confirmation of the assignments of the IR as well as the FIR transitions. In addition, accurate frequencies for several transitions have been determined in the ground vibrational state in the range 109-127 GHz and provide assignments for additional microwave lines.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 107-111 |
| Number of pages | 5 |
| Journal | Infrared Physics and Technology |
| Volume | 38 |
| Issue number | 2 |
| State | Published - Mar 1997 |
| Externally published | Yes |
Fingerprint
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Double resonance measurements of far infrared lasing transitions in methanol. / Mukhopadhyay, I.; Sastry, K. V L N; Crownover, Richard L; DeLucia, Frank C.
In: Infrared Physics and Technology, Vol. 38, No. 2, 03.1997, p. 107-111.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Double resonance measurements of far infrared lasing transitions in methanol
AU - Mukhopadhyay, I.
AU - Sastry, K. V L N
AU - Crownover, Richard L
AU - DeLucia, Frank C.
PY - 1997/3
Y1 - 1997/3
N2 - In this work, precise frequencies have been measured for two important far-infrared (FIR) laser transitions in methanol. These are optically pumped by the 9P(16) CO2 laser line at an offset of +64 MHz from the line center, using infrared (IR)-millimetrewave (MMW) double resonance (DR) techniques. The two measured FIR lines are at 525,427.902 and 477,790.879 MHz, with an estimated precision of ± 50 kHz. Another line has been observed at 573,025.151 MHz. It corresponds to an absorption transition whose lower level is the upper pumped level. The measurements provide a valuable confirmation of the assignments of the IR as well as the FIR transitions. In addition, accurate frequencies for several transitions have been determined in the ground vibrational state in the range 109-127 GHz and provide assignments for additional microwave lines.
AB - In this work, precise frequencies have been measured for two important far-infrared (FIR) laser transitions in methanol. These are optically pumped by the 9P(16) CO2 laser line at an offset of +64 MHz from the line center, using infrared (IR)-millimetrewave (MMW) double resonance (DR) techniques. The two measured FIR lines are at 525,427.902 and 477,790.879 MHz, with an estimated precision of ± 50 kHz. Another line has been observed at 573,025.151 MHz. It corresponds to an absorption transition whose lower level is the upper pumped level. The measurements provide a valuable confirmation of the assignments of the IR as well as the FIR transitions. In addition, accurate frequencies for several transitions have been determined in the ground vibrational state in the range 109-127 GHz and provide assignments for additional microwave lines.
UR - http://www.scopus.com/inward/record.url?scp=0031084662&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031084662&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031084662
VL - 38
SP - 107
EP - 111
JO - Infrared Physics and Technology
JF - Infrared Physics and Technology
SN - 1350-4495
IS - 2
ER -