System for generating pluralities of optical pulses with predetermined frequencies in a temporally and spatially overlapped relationship
Abstract
Ultrashort (pico second and shorter) laser pulses having components of different frequency which are overlapped coherently in space and with a predetermined constant relationship in time, are generated and may be used in applications where plural spectrally separate, time-synchronized pulses are needed as in wave-length resolved spectroscopy and spectral pump probe measurements for characterization of materials. A Chirped Pulse Amplifier (CPA), such as a regenerative amplifier, which provides amplified, high intensity pulses at the output thereof which have the same spatial intensity profile, is used to process a series of chirped pulses, each with a different central frequency (the desired frequencies contained in the output pulses). Each series of chirped pulses is obtained from a single chirped pulse by spectral windowing with a mask in a dispersive expansion stage ahead of the laser amplifier. The laser amplifier amplifies the pulses and provides output pulses with like spatial and temporal profiles. A compression stage then compresses the amplified pulses. All the individual pulses of different frequency, which originated in each single chirped pulse, are compressed and thereby coherently overlapped in space and time. The compressed pulses may be used for the foregoing purposes and other purposes wherien pulses having a pluralitymore »
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7207310
- Patent Number(s):
- 5095487
- Application Number:
- PPN: US 7-627661
- Assignee:
- Univ. of Rochester, NY (United States)
- DOE Contract Number:
- FC03-85DP40200
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 14 Dec 1990
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; LASER RADIATION; BEAM SHAPING; AMPLIFICATION; AMPLIFIERS; BEAM PROFILES; COMPRESSION; ELECTROMAGNETIC PULSES; USES; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; PULSES; RADIATIONS; 426002* - Engineering- Lasers & Masers- (1990-)
Citation Formats
Meyerhofer, D D, Schmid, A W, and Chuang, Y. System for generating pluralities of optical pulses with predetermined frequencies in a temporally and spatially overlapped relationship. United States: N. p., 1992.
Web.
Meyerhofer, D D, Schmid, A W, & Chuang, Y. System for generating pluralities of optical pulses with predetermined frequencies in a temporally and spatially overlapped relationship. United States.
Meyerhofer, D D, Schmid, A W, and Chuang, Y. Tue .
"System for generating pluralities of optical pulses with predetermined frequencies in a temporally and spatially overlapped relationship". United States.
@article{osti_7207310,
title = {System for generating pluralities of optical pulses with predetermined frequencies in a temporally and spatially overlapped relationship},
author = {Meyerhofer, D D and Schmid, A W and Chuang, Y},
abstractNote = {Ultrashort (pico second and shorter) laser pulses having components of different frequency which are overlapped coherently in space and with a predetermined constant relationship in time, are generated and may be used in applications where plural spectrally separate, time-synchronized pulses are needed as in wave-length resolved spectroscopy and spectral pump probe measurements for characterization of materials. A Chirped Pulse Amplifier (CPA), such as a regenerative amplifier, which provides amplified, high intensity pulses at the output thereof which have the same spatial intensity profile, is used to process a series of chirped pulses, each with a different central frequency (the desired frequencies contained in the output pulses). Each series of chirped pulses is obtained from a single chirped pulse by spectral windowing with a mask in a dispersive expansion stage ahead of the laser amplifier. The laser amplifier amplifies the pulses and provides output pulses with like spatial and temporal profiles. A compression stage then compresses the amplified pulses. All the individual pulses of different frequency, which originated in each single chirped pulse, are compressed and thereby coherently overlapped in space and time. The compressed pulses may be used for the foregoing purposes and other purposes wherien pulses having a plurality of discrete frequency components are required. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 10 00:00:00 EST 1992},
month = {Tue Mar 10 00:00:00 EST 1992}
}