A Caltech Library Service

Quantum optics with cold atoms--nonlinear spectroscopy and road toward single-atom trap


Hu, Zhen (1995) Quantum optics with cold atoms--nonlinear spectroscopy and road toward single-atom trap. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/ykpq-pa09.


NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. Investigations of optical processes for laser cooled and trapped atoms are described. Fluorescence from Cs atoms in a magneto-optical trap is detected under conditions of very low atomic density. Discrete steps are observed in the fluorescent signal versus time and are associated with the arrival and departure of individual trapped atoms. Histograms of the frequency of occurrence of a given level of fluorescence exhibit a series of uniformly spaced peaks that are attributed to the presence of N = 0, 1, 2 atoms in the trap. In addition, numerical absorption and emission spectra for three-level [...], [...], and V systems under intense radiations are calculated. Absorption spectra for a [...] system is used to explain the probe-wave amplification and absorption spectra recorded for Cs atoms cooled and confined in a magneto-optical trap, in which novel spectral features of narrow frequency widths with single-pass gain exceeding 20% are observed. The consequence of the optical gain is demonstrated to lead to negative radiation pressure, which is investigated together with other mechanical forces in the trap. Various alternative trapping schemes in three-level and two-level atoms are proposed as possible means to compress an atomic sample and demonstrated for a two-level magneto-optical trap.

Item Type:Thesis (Dissertation (Ph.D.))
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Kimble, H. Jeff
Thesis Committee:
  • Kimble, H. Jeff (chair)
  • Libbrecht, Kenneth George
  • Willems, Phil A.
Defense Date:5 June 1995
Record Number:CaltechETD:etd-10112007-092812
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4038
Deposited By: Imported from ETD-db
Deposited On:12 Oct 2007
Last Modified:08 Nov 2023 18:42

Thesis Files

PDF (Hu_z_1995.pdf) - Final Version
See Usage Policy.


Repository Staff Only: item control page