Quest™ U
High Performance Low Stray Light CCD Spectrometer
The Quest U is a linear CCD array spectrometer optimized for UV performance using a low stray light optical bench. It features a 2048 element detector, built-in 16-bit digitizer, USB 2.0 interface with a >2.0 MHz readout speed, and external trigger. The Quest U is temperature compensated, which greatly reduces the thermal drift to ~15 counts/oC. This gives improved stability by decreasing baseline drift and sustaining the dynamic range.
The Quest U is available in two standard spectral configurations; 200nm - 400nm and 200nm - 850nm. Custom configurations and RS232 communication interface are available for OEM applications.
Applications:
UV, Vis, and NIR: Spectroscopy/Spectroradiometry/Spectrophotometry
Wavelength Identification
Absorbance
Reflectance
OEM Optical Instrumentation
Features
Low Stray UV Light
UV and UV/NIR Standard
< 0.4nm Spectral Resolution
16-bit Digitizer
1ms Minimum Integration Time
>2.0 MHz Readout Speed
Plug-and-play USB 2.0
Power Input
USB @ < 0.35 Amps
Detector Type
Response Enhanced Linear CCD Array
Detector Pixel Format
2048 x 1 Elements @ 14μm x 200μm Per Element
Spectrograph f/#
3.6
Spectrograph Optical Layout
Czerny-Turner
Dynamic Range
1300:1 Single Acquisition
Digitizer Resolution
16-bit or 65,535:1
Readout Speed
>2.0 MHz
Data Transfer Speed
Up to 480 Spectra Per Second Via USB 2.0
Integration Time
1 - 65,535ms
Thermal Drift
~15 Counts/°C (~29 Counts/°C Max)
Aux Port
External Trigger, Digital IOs
Operating Temperature
5°C - 35°C
Operational Relative Humidity
85% Noncondensing
Weight
~ 0.8 lbs (0.37 kg)
Dimensions
4.9in x 3.6in x 1.4in (124mm x 91mm x 35mm)
Computer Interface
USB 2.0 / 1.1 and Enhanced RS232
Operating Systems
Windows: XP, 7, 8, 10 (32-bit & 64-bit)
1. Fiber Coupler
Secures Fiber to Ensure Repeatable Results
By coupling a fiber optic to the SMA 905 adaptor, light will be guided to the slit and optically matched, ensuring reproducibility. For free space sampling, a diffuser or lens assembly can be connected directly to the SMA 905 adaptor.2. Entrance Slit
Determines Photon Flux and Spectral Resolution
Light entering into a spectrometer’s optical bench is vinyetted by a pre-mounted and aligned slit. This ultimately determines the spectral resolution and throughput of the spectrometer after grating selection. We offer a variety of slit widths to match your specific application needs: from 10μm - 200μm wide, with custom slits available.
Slit Option
Dimensions
Approx. Resolution
200-400nm10μm
10μm wide x 1mm high
~0.4nm
25μm
25μm wide x 1mm high
~0.6nm
50μm
50μm wide x 1mm high
~1.0nm
100μm
100μm wide x 1mm high
~1.6nm
200μm
200μm wide x 1mm high
~3.0nm
Custom Slit Widths Available
3. Collimating Mirror
Collimates and Redirects Light Towards Grating
Both mirrors are f/# matched focusing mirrors coated with AlMg2, which produces approximately 95% reflectance when working in the UV-Vis spectrum. Aluminum (Al) provides reflectance and magnesium (Mg2) protects the aluminum from oxidation.4. Diffraction Grating
Diffracts Light, Separating Spectral Components
The groove frequency of the grating determines two key aspects of the spectrometer’s performance: the wavelength coverage and the spectral resolution. When the groove frequency is increased, the instrument will achieve higher resolution, but the wavelength coverage will decrease. Inversely, decreasing the groove frequency increases wavelength coverage at the cost of spectral resolution.
The blaze angle or blaze wavelength of the grating is also a key parameter in optimizing the spectrometer’s performance. The blaze angle determines the maximum efficiency that the grating will have in a specific wavelength region.
Slit Option
Dimensions
Approx. Resolution
200-400nm10μm
10μm wide x 1mm high
~0.4nm
25μm
25μm wide x 1mm high
~0.6nm
50μm
50μm wide x 1mm high
~1.0nm
100μm
100μm wide x 1mm high
~1.6nm
200μm
200μm wide x 1mm high
~3.0nm
Custom Slit Widths Available
5. Focusing Mirror
Refocuses Dispersed Light onto Detector
Both mirrors are f/# matched focusing mirrors coated with AlMg2, which produces approximately 95% reflectance when working in the UV-Vis spectrum. Aluminum (Al) provides reflectance and magnesium (Mg2) protects the aluminum from oxidation.6. Array Detector
Measures Entire Spectrum Simultaneously
The Quest U features a 2048 x 1 linear CCD array detector with a 14μm pixel width and > 2000 active pixels. As the incident light strikes the individual pixels across the CCD, each pixel represents a portion of the spectrum that the electronics can then translate and display with a given intensity using BWSpec™ software.
The quantum efficiency (QE) and noise level of the array detector greatly influences the spectrometer’s sensitivity, dynamic range and signal-to-noise ratio. The spectral acquisition speed of the spectrometer is mainly determined by the detector response over a wavelength region.
Specifications
Wavelength Range
200nm - 850nm
Pixels
2048
Pixel Size
14μm x 200μm
Well Depth
~65,000 e-
Digitization Rate
>2.0 MHz
商品属性 [波长范围] UV, Vis, and NIR