Laser system for precision atom interferometry
Abstract
Laser system for precision atom interferometryAbstract:The proposed instrument acquisition supports ongoing DoD sponsored research" in the areaof precision atom interferometry. As a result of recent sponsored research, it is now understoodthat the performance o""f large baseline atom interferometers (see Refs. 1, 3) is limited by the qualityand output power of the laser system used to manipu""late atomic wavepackets. We propose toacquire a precision, high-power, low frequency/phase noise laser source designed for precisio""natom interferometric applications. The proposed system is too expensive to be acquired underindividual programs, and will lead to" at least an order of magnitude improvement in theperformance of atom interferometric sensors currently under investigation ~ bring"ing them toextraordinary and potentially disruptive levels of performance.The laser system is based on a proven, previously demons""trated, design. High powerEDFA amplifiers operating at 1560 nm (IPG, 30 W each) are coherently summed then frequencydoubled in cas"caded PPLN crystals (Covesion). The EDFA~s are seeded with narrow-line localoscillators from NKT. Each of the required two of spect"ral components at 780 nm is derived froman independent system, providing a total of > 60 W of laser power (accounting for power los""ses inthe beam delivery chain) for wavepacket manipulation. As previously demonstrated, operationwith pairs of coherently summed a""mplifiers allows for precise amplitude shaping of the beam,without introducing additional electro-optic elements into the beam path"" (Ref. 6). Finally, theproposed configuration achieves coherent wavepacket control in a regime where spurious laseratominteraction"s (associated with AC Stark shift induced forces on atomic wavepackets) arestrongly suppressed.Our request includes funds to cover" the procurement of four 30 W EDFA~s (IPG), 4 seedlasers (NKT) and 5 PPLN doubling crystals (Covesion) and funds for the required m"echanical andopto-mechanical components to integrate the system.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- May 05, 2017
- Source ID
- N000141712506
Entities
People
- Mark Kasevich
Organizations
- Office of Naval Research
- Stanford University
- United States Navy