The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems

Kulp, Thomas J.; Bisson, Scott E.; Bambha, Ray P.; Reichardt, Thomas A.; Goers, Uta-Barbara; Aniolek, Kenneth W.; Kliner, Dahv A. V.; Richman, Bruce A.; Armstrong, Karla; Sommers, Ricky; Schmitt, Randal L.; Powers, Peter E.; Levi, Ofer; Pinguet, Thierry; Fejer, M. M.; Koplow, Jeffrey P.; Goldberg, L.; McRae, Thomas G.

doi:10.1007/s00340-002-0978-5

Cited by 29 publications

(7 citation statements)

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“…However, it is sensitive to alignment, does not allow easy continuous tuning and requires more optics, electronics, and frequent adjustment. For nanosecond pulsed operation, a system based on the injection seeded OPG using PPLN (Periodically Poled Lithium Niobate) provides an alternative approach [8][9][10][11]. In our opinion, the simplicity and robustness of the seeded OPG is suitable for space applications.…”

Section: Introductionmentioning

confidence: 98%

Tunable narrow linewidth laser source for a methane lidar

Riris

Numata

et al. 2012

2012 IEEE Aerospace Conference

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A high efficiency, narrow linewidth tunable laser source is developed for greenhouse trace gas remote sensing. It features broad, continuous tuning range at 1570 -1655 nm and 3291 nm with narrow linewidth (500 MHz) and high spectral purity. This laser is based on seeded optical parametric generator (OPG) technology. Several trace gas species were continuously detected for 72 hours in an open path environment. We also present our recent airborne experiment result based on this laser technology.

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Section: Introductionmentioning

confidence: 98%

Tunable narrow linewidth laser source for a methane lidar

Riris

Numata

et al. 2012

2012 IEEE Aerospace Conference

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“…These requirements are currently only addressed by optical parametric oscillators (OPOs). 2,3 We reported previously on a hyperspectral imaging instrument based upon a continuous-wave, pump enhanced OPO 2,4-6 coupled to a polygonal electro-mechanical scanner. 2 This device exhibited excellent spectral resolution in a compact and efficient geometry, but it possessed some drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Active hyperspectral imaging system for the detection of liquids

et al. 2008

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The in situ location and identification of discrete liquid droplets on surfaces is a technically challenging problem. Successful solutions often combine real time imaging and optical spectroscopic techniques. To this end, we present results of initial experiments using a dual-band mid-and shortwave IR (1.3 -4.5 µm) imaging device to differentiate between a selection of mineral and synthetic oils. The illumination source is an optical parametric oscillator comprising a periodically-poled LiNbO 3 crystal internally pumped by a Nd:YVO 4 laser, which is pumped by a 3 W diode laser. The source can produce output powers of ca. 0.3 and 0.1 W in the signal and idler fields, respectively. System size and complexity are minimised by use of an MCT single element detector and images are acquired by raster scanning of the target. The reflection, absorption and/or scatter of the incident radiation by the liquids and their surroundings provide a method for spatial location, whereas the characteristic spectra obtained from each sample can be used to uniquely identify the deposited substance. Both static and video images can be obtained at a range of < 10 metres by this apparatus.

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“…These requirements are currently only addressed by optical parametric oscillators (OPOs). 2, 3 We reported previously on a hyperspectral imaging instrument based upon a continuous-wave, pump enhanced OPO 2,4-6 coupled to a polygonal electro-mechanical scanner. 2 This device exhibited excellent spectral resolution in a compact and efficient geometry, but the OPO cavity was mechanically held on optical resonance with the pump laser, which rendered the device prohibitively sensitive to mechanical perturbations.…”

Section: Introductionmentioning

confidence: 99%

Hazardous liquid detection by active hyperspectral imaging

et al. 2011

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The ability to remotely locate and classify potential liquid hazards is desirable in a variety of civilian and military applications. Candidate technologies to satisfy these requirements include the fusion of imaging and optical spectroscopy. Hence, a novel system based on IR Negative Contrast Imaging (NCI) is presented. The NCI system is based on an OPO comprising a periodically-poled LiNbO 3 (PPLN) crystal of fanned grating design that operates in both the shortwave and midwave IR spectral regions (1.5 -1.9 μm and 2.4 -3.8 μm, respectively). Wavelength tuning is achieved by translating the PPLN crystal within the 1064 nm pump beam. System size and complexity are minimised by the use of InGaAs and Zn doped MCT single element detectors and the intracavity OPO design. Images are composed by raster scanning the monochromatic beam over the scene of interest; the reflection and/or absorption of the incident radiation by target chemicals and their surrounding environment provide a method for spatial location of the hazard. The NCI has been employed to detect liquid chemicals on a variety of surfaces; initial results of laboratory investigations are presented here.

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The application of quasi-phase-matched parametric light sources to practical infrared chemical sensing systems

Cited by 29 publications

References 0 publications

Tunable narrow linewidth laser source for a methane lidar

Tunable narrow linewidth laser source for a methane lidar

Active hyperspectral imaging system for the detection of liquids

Hazardous liquid detection by active hyperspectral imaging

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