Controlling the performance of a pulsed optical parametric oscillator: a survey of techniques and spectroscopic applications

Haub, John; Hentschel, R.; Johnson, Matthew; Orr, Brian J.

doi:10.1364/josab.12.002128

Cited by 29 publications

(11 citation statements)

References 32 publications

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“…Over the past 20 years, development, construction, and commercialization of widely tunable sources of infrared radiation have led to a dramatic increase in the number of research groups obtaining infrared spectra of ions and in the variety and complexity of ions for which spectra have been reported. The two main technologies responsible for expansion of the field are the free electron laser (FEL) (Elias et al, 1976; Deacon et al, 1977; Colson & Sessler, 1985; O'Shea & Freund, 2001; Colson et al, 2002) (for a list of currently operating facilities see http://www.elettra.trieste.it/projects/roundtable/facilities.html) and the optical parametric oscillator/amplifier (OPO/OPA) (Haub et al, 1995; Strossner et al, 2002; van Herpen et al, 2004).…”

Section: Recent Irmpd Experiments Using Free Electron Lasers and Optimentioning

confidence: 99%

Assembly and remodeling of the fibrillar fibronectin extracellular matrix during gastrulation and neurulation in Xenopus laevis

Davidson

Keller

DeSimone

2004

Developmental Dynamics

118

119

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Fibronectin, a major component of the extracellular matrix is critical for processes of cell traction and cell motility. Whole-mount confocal imaging of the three-dimensional architecture of the extracellular matrix is used to describe dynamic assembly and remodeling of fibronectin fibrils during gastrulation and neurulation in the early frog embryo. As previously reported, fibrils first appear under the prospective ectoderm. We describe here the first evidence for regulated assembly of fibrils along the somitic mesoderm/endoderm boundary as well as at the notochord/somitic mesoderm boundary and clearing of fibrils from the dorsal and ventral surfaces of the notochord that occurs over the course of a few hours. As gastrulation proceeds, fibrils are restored to the dorsal surface of the notochord, where the notochord contacts the prospective floor plate. As the neural folds form, fibrils are again remodeled as deep neural plate cells move medially. The process of neural tube closure leaves a region of the ectoderm overlying the neural crest transiently bare of fibrils. Fibrils are assembled surrounding the dorsal surface of the neural tube as the neural tube lumen is restored.

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Section: Recent Irmpd Experiments Using Free Electron Lasers and Optimentioning

confidence: 99%

Assembly and remodeling of the fibrillar fibronectin extracellular matrix during gastrulation and neurulation in Xenopus laevis

Davidson

Keller

DeSimone

2004

Developmental Dynamics

118

119

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“…Such remarkably high beam quality for a pulsed PPLN OPO is attributable to its confined pumping geometry, with the pump-laser beam waist of ϳ0.1 mm in the 0.5-mm-thick PPLN crystal favoring the lowest-order transverse mode over higher orders. This situation contrasts with that for many pulsed OPOs based on bulk nonlinear-optical media, 10,13,16,23,34,42,43 where various effects such as noncollinear phase matching tend to result routinely in inferior beam quality.…”

Section: B Temporal and Spatial Characteristics Of The Ppln Opo Outpmentioning

confidence: 83%

“…46 However, there is still a call for pulsed, continuously tunable, narrowband OPOs-for instance, in applications depending on time-resolution ͑such as light detecting and ranging 29 ͒ or nonlinear-optical spectroscopy 3,[12][13][14][15][16]24,25,32,35 or wavelength conversion. 3,10,16,34 Our PPLN OPO/OPA spectroscopic system 3 answers that call admirably.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to our own contributions, 2,3,12-16 there are numerous previous instances 11,[17][18][19][20][21][22][23][24][25][26][27][28][29] of injection-seeded pulsed OPO devices in which the seed radiation is of sufficiently narrow bandwidth to attain SLM operation of the OPO. Many of these examples pertain to TDL-seeded OPOs, 2,3,[12][13][14][15][16][19][20][21][22][24][25][26][27]29 whereas others include OPO injection seeding with cw dye, 17,28 color-center, 18 and Ti:sapphire 23 lasers. Most of the earlier ͑pre-1995͒ investigations of SLM injection-seeded OPOs were performed with fixed seed laser wavelength, and appear to have concentrated primarily on attaining lower OPO gain threshold, higher efficiency, and narrower linewidth, rather than on continuous tunability.…”

Section: Introductionmentioning

confidence: 99%

“…9,10,[12][13][14][15][16]34,35 However, for the most demanding spectroscopic applications, requiring the narrowest possible optical bandwidth and high spatial beam quality, active control of the injectionseeded OPO cavity is generally necessary for stable, continuously tunable SLM operation. This is demonstrated in the present article and in its precursors.…”

Section: Introductionmentioning

confidence: 99%

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Locking the cavity of a pulsed periodically poled lithium niobate optical parametric oscillator to the wavelength of a continuous-wave injection seeder by an “intensity-dip” method

Baxter

Orr

1999

Review of Scientific Instruments

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Injection seeding by a single-mode continuous-wave (cw) laser provides a convenient way to achieve narrowband tunable operation of a laser with a broad spectral gain profile, or of an optical parametric oscillator (OPO). Continuous single-mode tunability of the laser or OPO output usually requires the length of the optical cavity to be controlled as the injection-seeding wavelength is scanned. We report a novel variant on established methods of locking the optical cavity length to the seed wavelength. Our approach takes advantage of the resonance properties of an optical cavity. When the cavity is in resonance with the cw seed radiation, the total intensity of that radiation reflected off the cavity displays a pronounced dip; this intensity dip can be used as a locking signal to reset the cavity length piezoelectrically during each interval between the pump pulses that excite the laser or OPO. Our active cavity-locking scheme is realized in the case of a ring-cavity OPO, incorporating periodically poled lithium niobate (PPLN), pumped at 1.064 μm by a single-mode pulsed Nd:yttrium–aluminum–garnet laser and injection-seeded at its signal wavelength by a 1.55 μm single-mode tunable diode laser. The coherent infrared output of this injection-seeded PPLN OPO is shown to be continuously tunable, with an optical bandwidth of ∼130 MHz (0.0045 cm−1) and excellent spatial beam quality.

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InfraredLIDARApplications in Atmospheric Monitoring

Orr

2000

Encyclopedia of Analytical Chemistry

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The acronym LIDAR stands for light detection and ranging, an optical analog of RADAR (radio detection and ranging). The conventional version of LIDAR requires a laser transmitter to launch short pulses of coherent light, which are scattered from atmospheric targets of interest back to an optical receiver, with a time delay that is determined by the range of the target. Optical phenomena in the Earth's atmosphere (e.g. Rayleigh scattering, Raman scattering, Mie scattering, refraction, and resonant absorption) contribute to the amplitude of optical signals returning to the receiver and their characteristic wavelength dependence allows us to measure the concentration and velocity distributions of different atmospheric molecules and aerosol particles. LIDAR backscattering in the infrared (IR) region, on which this article concentrates, is well suited to detecting aerosols (as in clouds or industrial particulate emissions). IR DIAL (differential absorption LIDAR), a variant in which two wavelengths are used simultaneously to separate resonant molecular signals from background, enables most molecular species to be monitored by means of their IR absorption spectra. A closely related approach comprises long‐path IR laser absorption, with retro‐reflection from a topographic target (e.g. a strategically located mirror); this sacrifices optical range information but gains sensitivity because it integrates over all molecules in the optical column between the transmitter/receiver and the reflector. Such techniques are vitally dependent on pulsed IR laser technology.

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Controlling the performance of a pulsed optical parametric oscillator: a survey of techniques and spectroscopic applications

Cited by 29 publications

References 32 publications

Assembly and remodeling of the fibrillar fibronectin extracellular matrix during gastrulation and neurulation in Xenopus laevis

Assembly and remodeling of the fibrillar fibronectin extracellular matrix during gastrulation and neurulation in Xenopus laevis

Locking the cavity of a pulsed periodically poled lithium niobate optical parametric oscillator to the wavelength of a continuous-wave injection seeder by an “intensity-dip” method

InfraredLIDARApplications in Atmospheric Monitoring

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