DQPlus TE-Cooled Spectrometer

DETAIL

DQPlus is a deeply TE-cooled spectrometer featuring an excellent dynamic range and high signal-to-noise ratio. It can be integrated with various light sources such as lasers, tungsten lamps, and deuterium lamps to enable diverse spectral measurements, and is already widely applied across multiple fields.

Features
Cooling temperature -25 ℃, detector pixels 1024×58.
C-T optical path design, supporting multiple grating configurations such as 300 g/l, 600 g/l, 900 g/l, 1200 g/l.
Slits configurable to 10 µm, 25 µm, 50 µm, 100 µm, 200 µm as required, enabling different resolutions.
Optional built-in long-pass filters and second-order diffraction filters to effectively suppress stray light; stray light level <0.3%.
Equipped with Key-SMA905 fiber interface, improving fiber coupling efficiency and insertion/removal consistency.
Compatible with Oceanhood Taiwan’s multi-core densely packed fiber bundles, with fiber insertion/extraction strength consistency ≤7%.
Integrated 18-bit A/D, dynamic range ≥33000:1, high SNR ≥1100:1.
Provides multiple communication interfaces including USB and serial port, as well as a 24-pin interactive interface with built-in dedicated DAC and ADC, enabling light source activation, intensity control, and power feedback.
Equipped with multiple sensors; software can monitor the optical structure and internal detector temperature in real time.

Specification

Optical parameters
Optical fiber interface	Key-SMA905
Number of pixels	1024×58 pixels
Stray light	<0.3%
Consistency of optical fiber insertion and removal	≤7%
Function parameters
AD sampling	18bit
Data interface	USB2.0、RS232
Extended function interface	24PIN
Acquisition mode	Single, continuous, software trigger, synchronous external trigger, asynchronous reset external trigger
Detector integration time	8ms-30min
CCD read noise¹	≤12
CCD dynamic range²	33000:1
Signal-to-noise ratio³	1000:1
Response linearity⁴	≥98%
Others
Weight	≈1.24kg
Dimension	181×111.5×55mm
Operating temperature	0℃~40℃
Working humidity	20%-85%
1. CCD readout noise: measured as the root mean square (RMS) value at the minimum integration time. 2. CCD dynamic range: under minimum integration time conditions, calculated as (saturation value – dark noise baseline) / standard deviation of CCD readout noise; evaluation method follows Oceanhood Taiwan’s standard. 3. Signal-to-noise ratio (SNR) evaluation and calculation are performed in accordance with Oceanhood Taiwan’s standard rating method. 4. Response nonlinearity is measured prior to calibration.

Products

Model	Cooling temperature	Spectral Range		Spectral resolution
Model	°C	Start	End	10um	25um	50um	100um
DQPlus-350-1100	-25	350	1100	-	1.60	2.20	3.50
DQPlus-795-1030	-25	795	1030	-	0.60	-	0.90
DQPlus-790-930	-25	790	930	-	0.50	0.80	0.85
DQPlus-535-625	-25	535	625	-	0.25	0.35	0.70
DQPlus-200-970	-25	200	970	1.30	1.80	2.20	3.50
DQPlus-650-800	-25	650	800	0.30	-	-	0.76

Note:
1. The specifications listed above are standard. Spectral range, resolution and other parameters can be customized to meet customer requirements.
2. The resolution may deviate by approximately 120% from the actual value