Hargrove laser mode locker
date: label: date made
content: 1963
name: label: purchasing agent/middleman
content: Levine, B. F.
label: maker
content: Bell Laboratories
notes: label: Description (Brief)
content: This object was made under direction of Logan E. Hargrove at Bell Labs in 1963, and used in conjunction with a helium-neon laser tube (catalog #2014.0199.01). The device helped Hargrove and colleagues demonstrate the phenomenon of mode-locking with laser emissions. The technique of mode locking allows for generation of extremely short pulses of laser light. Such lasers are valuable for laboratory research investigating physics, chemistry, and optical phenomena that occur on very short timescales, as well as having medical applications.
label: Description (Brief)
content: References: US Patent #3412251, “Mode Locking in a Synchronously Modulated Maser,” filed 24 April 1964, issued 19 November 1968 to Logan E. Hargrove, assigned to Bell Telephone Laboratories. See also: Valdmanis, J. A., Richard L. Fork, and James P. Gordon, “Generation of optical pulses as short as 27 femtoseconds directly from a laser balancing self-phase modulation, group-velocity dispersion, saturable absorption, and saturable gain,” Optics Letters 10, no. 3 (1985): 131-133.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2022.0154.01
label: accession number
content: 2022.0154
label: catalog number
content: 2022.0154.01
objectType: label: Object Name
content: Laser Mode Locker
physicalDescription: label: Measurements
content: overall: 4 7/8 in x 3 in x 1 1/4 in; 12.3825 cm x 7.62 cm x 3.175 cm