Abstract

Pressure scaling of collisional broadening parameters of krypton (absorber) $4{p^6}S_0^1 \to \to 5p{[3/2]_2}$ transition centered at 107.3 nm in the presence of nitrogen ${{\rm N}_2}$ (perturber) is investigated. The absorption spectrum in the vicinity of the transition is obtained from the two-photon excitation scan of krypton in the presence of the perturber at different prescribed pressures varying from a few torrs to 10 atm. The absorption spectra reveal noticeable asymmetry at atmospheric pressure, and the asymmetry becomes increasingly pronounced with pressure; however, the absorption spectra at sub-atmospheric pressures tested are symmetric. The absorption spectra are fitted with synthetic asymmetric Voigt profiles across all pressures, wherein the asymmetry parameter is varied to capture the asymmetry at different pressures. The collisional shift (${\delta _C}$), the symmetric equivalent collisional full width at half maximum (${w_{C,0}}$), and the asymmetry parameter ($a$) are determined from the synthetic fits at various pressures. All the parameters are observed to vary linearly with pressure over the entire range of the pressure values tested. The mechanisms that cause the asymmetry in the absorption spectra are also discussed.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Temperature dependence of collisional broadening and shift for the Kr 4p6S01→5p[3/2]2 electronic transition

Abinash Sahoo, Dominic Zelenak, and Venkateswaran Narayanaswamy
Appl. Opt. 59(5) 1438-1446 (2020)

6 1S0–6 3P0 transition in 199Hg: Determination of the A coefficient and self–pressure broadening

B. L. Wexler, B. E. Wilcomb, and N. Djeu
J. Opt. Soc. Am. 70(7) 863-865 (1980)

Direct measurements of collisional Raman line broadening in the S-branch transitions of CO perturbed by CO, N2, and CO2

Paul S. Hsu, Hans U. Stauffer, Naibo Jiang, James R. Gord, and Sukesh Roy
Appl. Opt. 58(10) C1-C6 (2019)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (5)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription