The Acton Series LS-785 is a high-throughput, lens-based spectrograph ideal for near-IR spectroscopy. It features a fast f/2 optical system with proprietary AR-coated lenses for optimum NIR transmission. At an aperture of f/2, the LS-785 is perfectly matched to .22 NA optical fibers and achieves up to 4x the throughput of a standard f/4 mirror-based spectrograph. With its fast AR-coated compound lenses from our Acton Optics group and a custom gold-coated grating, the LS-785 provides the highest throughput and best imaging commercially available for the NIR. The LS-785 also includes micrometer-controlled grating rotation, allowing users to access the NIR between 750 nm and 1100 nm.

LS 785 features include:

Fast f/2 optics
High-transmission, AR-coated elements
Excellent image quality
Micrometer-controlled grating rotation
Micrometer focus adjustment
Seamless integration with high-performance Princeton Instruments cameras
Powerful, 64-bit LightField software

The LS-785 gives users a significant advantage in terms of both acquisition time and spatial integrity for demanding Raman spectroscopy applications. Combined with renowned Princeton Instruments PIXIS or PyLoN deep-depletion CCD detectors, the LS-785 delivers the highest possible throughput and performance.

Applications for the LS-785 spectrometers include

Raman spectroscopy
NIR absorption spectroscopy, tissue studies
Multichannel spectroscopy
Microspectroscopy spectroscopy
Fluorescence spectroscopy
Photoluminescence spectroscopy

Acton LS Series Lens Spectrographs model comparison and datasheets

Model	Focal Length	Aperture Ratio	Resolution	Dispersion	Grating
Acton LS 785	85 mm	f/2.0	5 cm-1 with 25 µm fiber	6.13 nm/mm @ 900 nm	gold coated 1200 g/mm

Publications

H. Yoneyama, Hideaki Kano et al.

2018

CARS molecular fingerprinting using sub-100-ps microchip laser source with fiber amplifier
Enabling ultrabroadband CARS, measuring molecular fingerprints of HeLa cells

Coherent Anti-Stokes Raman Spectroscopy

Bhavaya Sharma, Amber S. Moody

2017

Detection of neurotransmitters through the skull by surface enhanced spatially-offset Raman spectroscopy
Researchers at University of Tennessee present results on surface-enhanced spatially-offset Raman spectroscopy (SESORS) measurements of epinephrine at 50 mM and 100 µM in a brain tissue mimic through a cat skull.

General Raman

G. Bale, I. Tachtsidis et. al.

2014

A new broadband near-infrared spectroscopy system for in-vivo measurements of cerebral cytochrome-c-oxidase changes in neonatal brain injury
Investigation of Near IR spectroscopy for monitoring brain injuries in newborns/infants. Using high throughput and multiplexing capabilities of a LS785/PIXIS systm.

General Raman

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LS-785透射光譜儀

LS Series Lens Spectrographs

High-Throughput NIR Spectrometers

Acton LS Series Lens Spectrographs model comparison and datasheets

Publications