Optical frequency linear chirp variable unit

Details Optical frequency linear chirp variable unit Optical frequency linear chirp variable unit

2007-01-23

2007-01-23

Dunn, Drew A. (Department: 2872)

Optical: systems and elements

Light dispersion

C359S238000, C359S239000

Reexamination Certificate

active

10549575

ABSTRACT:
A linear opto-frequency chirp amount variable apparatus using a dielectric multilayer film mirror, which does not require the optical axis to be realigned each time the amount of a chirp is to be varied includes a pair of opposed, parallel, dielectric, multilayer film mirrors, and a movable mirror between the dielectric multilayer film mirrors. The movable mirror is inclined so that oblique, incident light, projected into the space between the two dielectric multilayer film mirrors, is reflected between them a plurality of times and then is reflected by the movable mirror into a direction parallel to the dielectric multilayer film mirror surfaces and in an incidence plane defined by the incident light and a plane-normal to each dielectric multilayer film mirror and toward the incident light. Moving the movable mirror forwards and backwards, parallel to the multilayer film mirrors changes the amount of a chirp.

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C. J. Bardeen et al.; “Selective Excitation of Vibrational Wave Packet Motion Using Chirped Pulses”, Physical Review Letters, vol. 75, No. 19, Nov. 6, 1995, pp. 3410-3413. Cited in the specification.
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R. Szipöcs et al.; “Chirped multilayer coatings for broadband dispersion control in femtosecond lasers”, Optics Letters, vol. 19, No. 3, Feb. 1, 1994, pp. 201-203. Cited in the specification.
Rick Trebino et al.; “Measuring ultrashort laser pulses in the time-frequency domain using frequency-resolved optical gating”, American Institute of Physics, Rev. Sci. Instrum. vol. 68, No. 9, Sep. 1997, pp. 3277-3295. Cited in the specification.

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