Terahertz pulse shaping via optical rectification in poled lithium niobate

Lee, Yun-Shik; Amer, N.; Hurlbut, Walter C.

doi:10.1063/1.1535268

Cited by 48 publications

(21 citation statements)

References 18 publications

(18 reference statements)

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“…To explore THz generation and propagation in the QPM structure, Lee and co-workers developed a simple theoretical model based on plane-wave propagation of the THz wave without the dispersion of the optical pulse in the poled crystal [7][8][9]. An instantaneous nonlinearity of the fs optical pulse was considered as the source term of the nonlinear wave equation in the crystal as below…”

Section: Temperature Dependency Of Thz Generation In Qpm Structuresmentioning

confidence: 99%

“…Here, we adopted the same analytical solution of Eq. (1) which was solved for a Gaussian input pulse [9] …”

Section: Temperature Dependency Of Thz Generation In Qpm Structuresmentioning

confidence: 99%

“…Among QPM devices, PPLN crystals have been actively employed in nonlinear frequency conversion because of the large nonlinearity and the ability of engineering. Furthermore to generate narrow-band THz radiation PPLN crystals have been mainly used via optical rectification of fs laser pulses [7][8][9] and DFG of two long-pulses from two pump lasers [10,11]. However, the generated THz pulses are strongly trapped in the material due to the total internal refraction which was caused by the large refractive index of the THz wave.…”

Section: Introductionmentioning

confidence: 99%

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Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation

Lee

et al. 2011

Optics Communications

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Section: Temperature Dependency Of Thz Generation In Qpm Structuresmentioning

confidence: 99%

“…Here, we adopted the same analytical solution of Eq. (1) which was solved for a Gaussian input pulse [9] …”

Section: Temperature Dependency Of Thz Generation In Qpm Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation

Lee

et al. 2011

Optics Communications

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“…When optical light traverses a material such as LN, a nonlinear optical effect called Optical Rectification creates a polarization across the material. By orienting domains with alternating opposite signs of nonlinear coefficient  (2) , and by selection of a domain width that is comparable to the propagation time difference between the optical and THz pulse, 10 a THz wave form will be generated that maps the domain structure. This was 6 Approved for public release; distribution is unlimited.…”

Section: Methodsmentioning

confidence: 99%

Chirp-Pulse Terahertz Range Profiling

Lang¹,

Warrender²,

Zhang³

2007

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Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Washington Headquarters Service, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and ABSTRACTTerahertz (THz) range profiling is investigated for several cm-size metal targets. Aperiodically-poled lithium niobate crystals are used to generate a chirp-pulse THz signal, which is used to probe several targets. The reflected waveforms from different targets show distinctive features that permit differentiation of the targets. Several additional research tasks required prior to implementation of this detection concept into a prototype system are identified. 5a. CONTRACT NUMBER. Enter all contract numbers as they appear in the report, e.g. F33615-86-C-5169. SUBJECT TERMS 5b. GRANT NUMBER.Enter all grant numbers as they appear in the report, e.g. 1F665702D1257. 5c. PROGRAM ELEMENT NUMBER.Enter all program element numbers as they appear in the report, e.g. AFOSR-82-1234. 5d. PROJECT NUMBER.Enter al project numbers as they appear in the report, e.g. 1F665702D1257; ILIR.5e. TASK NUMBER. Enter all task numbers as they appear in the report, e.g. 05; RF0330201; T4112.5f. WORK UNIT NUMBER. Enter all work unit numbers as they appear in the report, e.g. 001; AFAPL30480105. AUTHOR(S). Enter name(s) of person(s)responsible for writing the report, performing the research, or credited with the content of the report. The form of entry is the last name, first name, middle initial, and additional qualifiers separated by commas, e.g. Smith, Richard, Jr. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES).Self-explanatory. PERFORMING ORGANIZATION REPORT NUMBER.Enter all unique alphanumeric report numbers assigned by the performing organization, e.g. BRL-1234; AFWL-TR-85-4017-Vol-21-PT-2. SPONSORING/MONITORS AGENCY NAME(S) AND ADDRESS(ES).Enter the name and address of the organization(s) financially responsible for and monitoring the work. SPONSOR/MONITOR'S ACRONYM(S).Enter, if available, e.g. BRL, ARDEC, NADC. SPONSOR/MONITOR'S REPORT NUMBER(S). Enter ABSTRACTTerahertz (THz) range profiling is investigated for several cm-size metal targets. Aperiodicallypoled lithium niobate crystals are used to generate a chirp-pulse THz signal, which is used to probe several targets. The reflected waveforms from different targets show distinctive features that permit differentiation of the targets. Several additional research tasks required prior to implementation of this detection concept into a prototype system are identified.ii Approved for public release; distribution is unlimited.

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“…The later method can be used to generate broad-band, single-cycle THz waves under phase matching condition, 5,6 as well as to generate narrow-band, multicycle THz waves under quasi-phase matching condition. 7,8 As a femtosecond pulse illuminates a nonlinear crystal such as LiNbO 3 , ZnTe etc., a THz nonlinear polarization is generated via optical rectification. The ultrashort-pulse induced nonlinear polarization follows the intensity profile I(t) of the pulse.…”

Section: Introductionmentioning

confidence: 99%

Terahertz generation in Czochralski-grown periodically poled Mg:Y:LiNbO3 by optical rectification

Tang

Китаева

et al. 2006

J. Opt. Soc. Am. B

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Using a canonical pump-probe experimental technique, we studied the terahertz (THz) waves generation and detection via optical rectification and mixing in Czochralski-grown periodically poled Mg:Y:LiNbO 3 (PPLN) crystals. THz waves with frequencies at 1.37THz and 0.68 THz as well as 1.8 THz were obtained for PPLN with nonlinear grating periods of 30 and 60 µm, respectively. A general theoretical model was developed by considering the dispersion and damping of low frequency phonon-polariton mode. Our results show that THz waves are generated in forward and backward directions via pumping pulse rectification. The generated THz waves depend on the spectral shape of the laser pulses, quasi-phase mismatches and dispersion characteristics of a crystal.

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Terahertz pulse shaping via optical rectification in poled lithium niobate

Cited by 48 publications

References 18 publications

Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation

Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation

Chirp-Pulse Terahertz Range Profiling

Terahertz generation in Czochralski-grown periodically poled Mg:Y:LiNbO3 by optical rectification

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