| Full text | |
| Author(s): |
Fernandez, David Rodriguez
;
Torres, Manuel Alejandro Lefran
;
Cardoso, Marcos Roberto
;
Kondo, Jorge Douglas Massayuki
;
Saffman, Mark
;
Marcassa, Luis Gustavo
Total Authors: 6
|
| Document type: | Journal article |
| Source: | APPLIED PHYSICS B-LASERS AND OPTICS; v. 130, n. 4, p. 11-pg., 2024-04-01. |
| Abstract | |
We have constructed and characterized an affordable medium-finesse optical cavity (F similar to 1500)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$({\mathcal {F}}\sim {1500})$$\end{document} for the stabilization of tunable diode lasers at two different wavelengths (780, and 960nm\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${960\,\textrm{nm}}$$\end{document}, respectively). Its main element is an ultra-low expansion glass spacer, whose temperature was stabilized using thermoelectric cooler elements inside a vacuum chamber. By combining the dual sideband technique and the classical Pound-Drever-Hall technique, we were able to lock the lasers at any frequency within the cavity free spectral range. The cavity presents a long-term drift of resonant frequency of 1.2MHz/day\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${1.2\,\mathrm{MHz/day}}$$\end{document}, which can be compensated for by temperature variation. Finally, we demonstrate the cavity use in an electromagnetically induced transparency microwave spectrum experiment in a thermal atomic sample. (AU) | |
| FAPESP's process: | 18/06835-0 - Magneto optical trap of Rb2 molecules and colissional studies |
| Grantee: | Manuel Alejandro Lefrán Torres |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 19/10971-0 - Optical cavities for trapping of atoms and molecules |
| Grantee: | Luis Gustavo Marcassa |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 21/04107-0 - Collisions in a Cold Trapped Molecular Sample in a well-defined quantum state: COCOTRAMOS |
| Grantee: | Luis Gustavo Marcassa |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 21/06371-7 - Rydberg atoms interacting with microwave fields |
| Grantee: | Luis Gustavo Marcassa |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 19/23510-0 - Optical cavity for Rydberg atom experiments |
| Grantee: | David Rodríguez Fernández |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 22/16904-5 - Production and manipulation of cold molecules |
| Grantee: | David Rodríguez Fernández |
| Support Opportunities: | Scholarships in Brazil - Doctorate |