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Synchronously pumped mid-infrared CdSe optical parametric oscillator

Synchronously pumped mid-infrared CdSe optical parametric oscillator
Synchronously pumped mid-infrared CdSe optical parametric oscillator
Synchronously pumped optical parametric oscillators (SPOPOs) are efficient sources of tunable ultrashort pulses, with low threshold average power requirements, since gain is defined by peak power. An attractive material for such devices is cadmium selenide (CdSe) due to its high nonlinearity (d(31) = 18 pm/V), wide transparency range (0.75-25 µm) and high optical quality. Previous efforts involving CdSe in OPOs have been restricted to angle-tuning, and using Q-switched pump sources. We present here the first continuous-wave, mode-locked SPOPO based on non-critically phase-matched (NCPM) CdSe, with agile tuning of the idler over the range 9.1-9.7 µm, the longest wavelength achieved using a SPOPO to date. Pump-wavelength-tuning over a wide range (necessary for the NCPM arrangement) was provided by the signal output of a periodically poled lithium niobate (PPLN) SPOPO, operating close to degeneracy using a single PPLN grating period. The use of a diffraction grating to tune the signal of the PPLN SPOPO was a key factor in obtaining clean, single-frequency pump conditions, with tuning achieved by simple grating rotation.
Watson, M.A.
6701a8c8-7537-48e0-bd7e-acf50d52e0f4
O'Connor, M.V.
db2f4543-aa5b-4177-afeb-ad30941263a5
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d
Watson, M.A.
6701a8c8-7537-48e0-bd7e-acf50d52e0f4
O'Connor, M.V.
db2f4543-aa5b-4177-afeb-ad30941263a5
Shepherd, D.P.
9fdd51c4-39d6-41b3-9021-4c033c2f4ead
Hanna, D.C.
3da5a5b4-71c2-4441-bb67-21f0d28a187d

Watson, M.A., O'Connor, M.V., Shepherd, D.P. and Hanna, D.C. (2003) Synchronously pumped mid-infrared CdSe optical parametric oscillator. Conference on Lasers and Electro-Optics/Europe (CLEO/Europe-EQEC 2003), Munich, Germany. 21 - 26 Jun 2003. 1 pp .

Record type: Conference or Workshop Item (Paper)

Abstract

Synchronously pumped optical parametric oscillators (SPOPOs) are efficient sources of tunable ultrashort pulses, with low threshold average power requirements, since gain is defined by peak power. An attractive material for such devices is cadmium selenide (CdSe) due to its high nonlinearity (d(31) = 18 pm/V), wide transparency range (0.75-25 µm) and high optical quality. Previous efforts involving CdSe in OPOs have been restricted to angle-tuning, and using Q-switched pump sources. We present here the first continuous-wave, mode-locked SPOPO based on non-critically phase-matched (NCPM) CdSe, with agile tuning of the idler over the range 9.1-9.7 µm, the longest wavelength achieved using a SPOPO to date. Pump-wavelength-tuning over a wide range (necessary for the NCPM arrangement) was provided by the signal output of a periodically poled lithium niobate (PPLN) SPOPO, operating close to degeneracy using a single PPLN grating period. The use of a diffraction grating to tune the signal of the PPLN SPOPO was a key factor in obtaining clean, single-frequency pump conditions, with tuning achieved by simple grating rotation.

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Published date: 2003
Venue - Dates: Conference on Lasers and Electro-Optics/Europe (CLEO/Europe-EQEC 2003), Munich, Germany, 2003-06-21 - 2003-06-26

Identifiers

Local EPrints ID: 41615
URI: http://eprints.soton.ac.uk/id/eprint/41615
PURE UUID: e38aca94-d1e4-4554-9d54-b98c2d4e1a52
ORCID for D.P. Shepherd: ORCID iD orcid.org/0000-0002-4561-8184

Catalogue record

Date deposited: 06 Oct 2006
Last modified: 09 Jan 2022 02:38

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Contributors

Author: M.A. Watson
Author: M.V. O'Connor
Author: D.P. Shepherd ORCID iD
Author: D.C. Hanna

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