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Adaptively shaped mid-infrared pulses from a synchronously pumped optical parametric oscillator

Adaptively shaped mid-infrared pulses from a synchronously pumped optical parametric oscillator
Adaptively shaped mid-infrared pulses from a synchronously pumped optical parametric oscillator
Adaptively shaped, sub-picosecond pulses at 3.4µm are obtained from a synchronously pumped optical parametric oscillator based on periodically poled lithium niobate. A simulated annealing algorithm is used in a learning loop to gain adaptive control of the midinfrared idler pulse shape via shaping of a chirped near-infrared pump pulse.

Both indirect control, via optimization of the signal average power, and direct control, via optimization of the two-photon absorption of the idler in an InGaAs detector, has been demonstrated. Both these optimization parameters lead to compressed idler pulses, with slightly differing pulse shapes. By optimization of the cross correlation signal in an interferometer with unequal arm lengths we are also able to deliver compressed double pulses with a variable time delay.
parametric oscillators and amplifiers, ultrafast nonlinear optics, pulse shaping
1094-4087
8400-8405
Naz, N.A.
f9dc9ce8-391c-440f-83a6-fee2a322d1b5
Hung, H.S.S.
e501b84a-0865-4874-b506-abb7792789c4
O'Connor, M.V.
db2f4543-aa5b-4177-afeb-ad30941263a5
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Naz, N.A.
f9dc9ce8-391c-440f-83a6-fee2a322d1b5
Hung, H.S.S.
e501b84a-0865-4874-b506-abb7792789c4
O'Connor, M.V.
db2f4543-aa5b-4177-afeb-ad30941263a5
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead

Naz, N.A., Hung, H.S.S., O'Connor, M.V., Hanna, D.C. and Shepherd, D.P. (2005) Adaptively shaped mid-infrared pulses from a synchronously pumped optical parametric oscillator. Optics Express, 13 (21), 8400-8405. (doi:10.1364/OPEX.13.008400).

Record type: Article

Abstract

Adaptively shaped, sub-picosecond pulses at 3.4µm are obtained from a synchronously pumped optical parametric oscillator based on periodically poled lithium niobate. A simulated annealing algorithm is used in a learning loop to gain adaptive control of the midinfrared idler pulse shape via shaping of a chirped near-infrared pump pulse.

Both indirect control, via optimization of the signal average power, and direct control, via optimization of the two-photon absorption of the idler in an InGaAs detector, has been demonstrated. Both these optimization parameters lead to compressed idler pulses, with slightly differing pulse shapes. By optimization of the cross correlation signal in an interferometer with unequal arm lengths we are also able to deliver compressed double pulses with a variable time delay.

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Published date: 2005
Keywords: parametric oscillators and amplifiers, ultrafast nonlinear optics, pulse shaping

Identifiers

Local EPrints ID: 30193
URI: https://eprints.soton.ac.uk/id/eprint/30193
ISSN: 1094-4087
PURE UUID: 43f1b05f-802a-413e-b8af-1a72e9c1ea70
ORCID for D.P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184

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Date deposited: 11 May 2006
Last modified: 17 Jul 2019 01:19

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