A fast-scanning Fourier transform 2D IR interferometer

Roberts, Sean T.; Loparo, Joseph J.; Ramasesha, Krupa; Tokmakoff, Andrei

doi:10.1016/j.optcom.2010.10.049

Cited by 22 publications

(19 citation statements)

References 29 publications

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“…Rapid time-domain scanning using translation stages has been receiving an increased amount of attention in the past few years [16,22,23]. Continuous scanning of the delay between the two pump pulses, rather than stopping and restarting the translation stages, increases the accuracy and decreases the acquisition time of the pump axis data.…”

Section: Introductionmentioning

confidence: 99%

Simplified and economical 2D IR spectrometer design using a dual acousto-optic modulator

et al. 2013

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Over the last decade two-dimensional infrared (2D IR) spectroscopy has proven to be a very useful extension of infrared spectroscopy, yet the technique remains restricted to a small group of specialized researchers because of its experimental complexity and high equipment cost. We report on a spectrometer that is compact, mechanically robust, and is much less expensive than previous designs because it uses a single pixel MCT detector rather than an array detector. Moreover, each axis of the spectrum can be collected in either the time or frequency domain via computer programming. We discuss pulse sequences for scanning the probe axis, which were not previously possible. We present spectra on metal carbonyl compounds at 5 µm and a model peptide at 6 µm. Data collection with a single pixel MCT takes longer than using an array detector, but publishable quality data are still achieved with only a few minutes of averaging.

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Section: Introductionmentioning

confidence: 99%

Simplified and economical 2D IR spectrometer design using a dual acousto-optic modulator

et al. 2013

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“…To perform fast and accurate 2D IR experiments, it has been demonstrated that continuous scanning reduces the acquisition time while improving signal-to-noise ratio [9,23,24]. When the motor is scanned fast and continuously during data acquisition, however, the internal motor control can hardly follow its position at the kHz repetition rate of the measurement.…”

Section: Continuous Scanning With He-ne Delay Trackingmentioning

confidence: 99%

2D IR spectroscopy with phase-locked pulse pairs from a birefringent delay line

Réhault¹,

Maiuri²,

Manzoni³

et al. 2014

Opt. Express

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Abstract:We introduce a new scheme for two-dimensional IR spectroscopy in the partially collinear pump-probe geometry. Translating birefringent wedges allow generating phase-locked pump pulses with exceptional phase stability, in a simple and compact setup. A He-Ne tracking scheme permits to scan continuously the acquisition time. For a proof-ofprinciple demonstration we use lithium niobate, which allows operation up to 5 μm. Exploiting the inherent perpendicular polarizations of the two pump pulses, we also demonstrate signal enhancement and scattering suppression.

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“…4 The main advantage of using a retroreflector over a mirror is that it returns the light to its source without great sensitivity to alignment. 5 While there are many retroreflector designs, hollow retroreflectors serve an important role in Fourier transform spectroscopy, 6 laser stabilization, 7 and interference-based ultrafast techniques.…”

Section: Introductionmentioning

confidence: 99%

“…5 While there are many retroreflector designs, hollow retroreflectors serve an important role in Fourier transform spectroscopy, 6 laser stabilization, 7 and interference-based ultrafast techniques. 3,4 Hollow retroreflectors are preferred over other designs because they have lower masses than solid retroreflectors. They also minimize the chromatic dispersion that lengthens ultrafast pulses.…”

Section: Introductionmentioning

confidence: 99%

Lightweight hollow rooftop mirrors for stabilized interferometry

Hill¹,

Courtney²,

Park³

et al. 2013

Opt. Eng

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Abstract. Hollow rooftop mirrors, also known as dihedral retroreflectors, can simultaneously preserve polarization, minimize chromatic dispersion, and allow beams to be stacked inside an interferometer. Two hollow rooftop mirrors were fabricated and characterized using a Fizeau interferometer and an inexpensive home-built jig instead of a master cube. The mass was 3.3 g for a clear aperture surface area of 110 mm 2 with maximum retroreflected beam deviation of 12 arc s. With a hollow rooftop mirror mounted on a piezoelectric transducer in one arm of a Mach-Zehnder interferometer, a displacement stability of AE0.8 nm rms was achieved using active feedback. The rooftop mirrors' suitability for Fourier transform spectroscopy was demonstrated.

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A fast-scanning Fourier transform 2D IR interferometer

Cited by 22 publications

References 29 publications

Simplified and economical 2D IR spectrometer design using a dual acousto-optic modulator

Simplified and economical 2D IR spectrometer design using a dual acousto-optic modulator

2D IR spectroscopy with phase-locked pulse pairs from a birefringent delay line

Lightweight hollow rooftop mirrors for stabilized interferometry

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