Laser Atom Cooling, Trapping and Deposition System

1997 Nobel Prize in Physics was awarded for development of methods to cool and trap atoms with laser light. A start has been made on the design of atomic lasers, which may be used in the future to manufacture very small electronic components.

Del Mar Ventures teamed with leading researches in the field of laser atom cooling and trapping and in development and implementation of different elements of atom optics to build custom systems for atomic beams cooling and application in such fields as nanolithography, nanostructured materials and atom optics.

Main components of the system:

Custom made UHV apparatures pumped up to 10^-11 Torr
Atomic Beam (Na, Cs, Rb, Cr etc.)
Diode lasers chosen for cooling of the given type of atomic beam
Set of Magneto-Optic Trap and/or Magnetic Trap for chilled atoms ("atom traps").
Atom optic elements
    Atomic Mirrors
    Standing Wave Lattices
    Atom Guides
    Evanescent Laser Field Focusing Diaphragm and Diaphragm Arrays

DelMar Ventures develop and supply full atom cooling and trapping systems according to customer requirements as well as different elements (atomic beams, lasers, traps, elements of atomic optics).
To discuss your requirements contact our application scientist at delmar@sciner.com

Future Job Opportunities
In anticipation of future positions developing at DelMar Ventures, you are welcome to submit your resume for our files. In the event of a position developing for which you may be qualified, we would be pleased to contact you and confirm your qualification, interest and availability at that time. Please email your resume to DelMar Ventures Human Resources Department at delmar@sciner.com (Att. HRD, Mrs.Sandra Topol) or forward via fax to 509-752-0123

Read a review on

Abstract. The review describes the methods of trapping cold atoms in electromagnetic fields and the fields combined of electromagnetic and gravity fields. We discuss first the basic types of the dipole radiation forces used for cooling and trapping atoms in the laser fields. We outline next the fundamentals of the laser cooling of atoms and classify the temperature limits for basic laser cooling processes. The main body of the review is devoted to discussion of atom traps based on the dipole radiation forces, dipole magnetic forces, combined dipole radiation-magnetic forces, and the forces combined of the dipole radiation-magnetic and gravity forces. Physical fundamentals of atom traps operating as the waveguides and cavities for cold atoms are also considered. The review ends with the applications of cold and trapped atoms in atomic, molecular and optical physics.

Contents

1. Introduction (170kB)

2. Dynamics of an Atom in a Laser Field (874kB)

2.1. Dipole Radiation Force
2.2. Dipole Radiation Force on a Two-Level Atom
2.2.1. Radiation Force in a Laser Beam. Potential of the Gradient Force
2.2.2. Radiation Force in a Standing Laser Wave
2.2.3. Radiation Force in an Evanescent Laser Wave
2.2.4. Gradient Force Potential in the Dressed State Picture
2.3. Dipole Radiation Force on a Multilevel Atom
2.4. Kinetic Description of Atomic Motion
2.4.1. Two-Level Atoms
2.4.2. Multilevel Atoms

3. Laser Cooling of Atoms (242kB)

3.1. Doppler Cooling
3.1.1. Deceleration and Longitudinal Cooling of an Atomic Beam
3.1.2. Transverse Cooling (Collimation) of an Atomic Beam
3.1.3. Three-Dimensional Cooling of Atoms
3.2. Sub-Doppler Cooling
3.3. Subrecoil Cooling
3.3.1. Raman Cooling
3.3.2. Velocity-Selective Coherent Population Trapping

4. Optical Trapping (288kB)

4.1. Trapping in Laser Beams
4.1.1. Far-off-Resonance Dipole Traps
4.1.2. Quasi-Electrostatic Dipole Traps
4.2. Trapping in Standing Laser Waves. Optical Lattices
4.3. Trapping in Optical Waveguide Modes. Atom Waveguides
4.4. Atom Cavities

5. Magnetic Trapping (277kB)

5.1. Static Magnetic Traps
5.2. Quadrupole Magnetic Trap with Time-Orbiting Potential
5.3. Magnetic Trap with an Optical Plug
5.4. Magnetic Mirrors and Cavities
5.5. Magnetic Trapping of Molecules

6. Magneto-Optical Trapping (268kB)

6.1. Simplified Scheme and Basic Configuration
6.2. (1+3)-Level Atom Model
6.3. (3+5)-Level Atom Model
6.4 Three-Dimensional MOT
6.5. Density Effects
6.6. Experimental Results

7. Gravity-Optical Traps and Cavities (part 7 and 8, 136kB)

8. Applications

8.1. Laser Trapping Spectroscopy
8.2. Bose-Einstein Condensation
8.3. Atom Laser
8.4. Intense Atomic Beams
8.5. Nuclear Physics
8.6. Ultra-Sensitive Isotope Trace Analysis
8.7. Ultracold Atom Collisions
8.8. Formation of Cold Molecules
8.9. Cavity QED, Single Atoms, etc.

References (170kB)

Del Mar Ventures> Product List>

Del Mar Ventures 4119 Twilight Ridge San Diego, CA 92130 tel (858) 755-6727 fax (858) 755-6771 v/efax (858) 630-237 v/efax: (509) 752-0123 delmar@sciner.com http://www.sciner.com/ http://www.femtosecondsystems.com/