BTS2048-BS CCD spectroradiometer for LASER radiation
The BTS2048-BS meets all the requirements of a high performance CCD spectroradiometer for measurement of laser diodes in the blue spectral range.
One of its unique features is its BiTec sensor, which combines a back-thinned CCD based spectroradiometer with a radiometric Si photodiode. This combination provides high linearity levels as well as extremely fast measurements. The fully linearized 2048 pixel CCD detector has a very wide dynamic range thanks to its integrating times that range from 2 µs to 4 s. This makes it possible to measure laser diodes over a wide intensity range. The optical grid arrangement limits the spectral measurement range to between 400 nm and 530 nm hence resulting in a very small optical bandwidth (0.3 nm). Si photodiodes exhibit exceptionally high linearity levels across their dynamic range. This makes the photodiode within the BiTec sensor ideal for additional linearization of the CCD (article on the BTS technology) The radiometric responsivity function of the photodiode may be used independently of the CCD enabling fast CW measurements even at low intensities. Any radiometric mismatch can be auto-corrected using spectral data from the CCD. Despite its compact dimensions (103 mm x 107 mm x 52 mm – LxWxH), the BTS2048-BS spectroradiometer has a remote-controlled filter wheel with two OD filters and a shutter for dark measurement.
Direct mounting instead of using a light guide
The BTS2048-BS spectroradiometer has a diffuser window and can therefore be used to measure the irradiance, spectrum and peak wavelength, without the need for any additional equipment. The diffuser window also enables the BTS2048-BS to be mounted directly onto accessories such as integrating spheres, radiance intensity measurement lenses, and goniometers in order to measure the radiant power, radiant intensity, and radiant intensity distribution.
User software and developer software
The standard S-BTS2048 user software has a customizable user interface and a large number of display and function modules which can be activated when configuring the BTS2048-BS with the respective accessory components from Gigahertz-Optik GmbH.
The S-SDK-BTS2048 developer software is recommended for integration of the BTS2048-BS in the user’s own software.
One essential quality feature of photometric devices is their precise and traceable calibration. The BTS2048-BS is calibrated by Gigahertz-Optik’s calibration laboratory which has been accredited by DAkkS (D-K-15047-01-00) for the spectral responsivity and spectral irradiance in line with ISO/IEC 17025. The calibration also included the corresponding accessory components. Every device is delivered with its respective calibration certificate.
CCD spectrometer with a wide dynamic range for CW and short-term measurement of the irradiance, spectrum, and peak wavelength. Accessories for measurement of other parameters.
Compact device. BiTec detector with a back-thinned CCD (2048 pixels, 0.3 nm optical resolution, 400 nm to 530 nm, electronic shutter) and Si photodiode with a radiometric filter. Optical bandwidth correction (CIE 214). Filter wheel with shutter and attenuation filters. Input lens with a diffusor window. Cosine field of view
Spectral: (1E-3 - 1E7) W/(m²nm), 400 nm to 530 nm
CCD spectroradiometer for design applications. Module for integration in test systems
Factory calibration. Traceable to international standards
2 μs - 4 s *1
(400 - 530) nm
|Number of pixels||
Highly sensitive back-thinned CCD chip
16bit (25 ns instruction cycle time)
± 0.025 nm
Standard illuminant A 50K; LED up to ± 4% depending of the LED spectrum
mathematical online band-pass correction is supported
completely linearized chip >99.6%
|Base line noise||
5 cts *3
|spectral irradiance responsivity range||
(1E-3 - 1E7) W/(m²nm) *5*6
|typical measurement time||
10 W/m² (400 - 530) nm Standard Illuminant A: 440ms
Spectral responsivity with radiometric matching. Online correction of the radiometric matching through spectral measurement data (spectral missmatch factor correction).
20 µs - 6000 ms
seven (7) measurement ranges with transcendent offset correction
Irradiandce ± 5 %
Spectral irradiance (W/(m² nm)), peak wavelength, center wavelength, centroid wavelength, Option integrating sphere: in addition radiant power (W) and spectral radiant power (W/nm), Option goniometer: in addition spectral radiant intensity and radiant intensity distribution
Diffusor, cosine corrected field of view (f2 ≤ 3 %)
4 positions (open, closed, OD1, OD2). Use for remote dark current measurement and dynamic range extension.
Parallel measurement with diode and array is possible, thereby linearity correction of the array through the diode and online correction of the spectral mismatch of the diode through a*(sz(λ)) respectively F*(sz(λ)).
32bit for device control,16bit for CCD array control, 8bit for photodiode control
USB V2.0, Ethernet (LAN UDP protocol), RS232, RS485
Standard for 2048 float array values via ethernet 7ms, via USB 2.0 140 ms
2x (0 - 25) VDC, 1x optocoupler isolated 5 V / 5 mA
2x open collector, max. 25 V, max. 500 mA
Trigger input incorporated (different options, rising/falling edge, delayed, etc.)
User software S-BTS2048
With power supply: DC Input 5V (±10 %) at 700 mA
103 mm x 107 mm x 52 mm (Length x Width x Height)
Tripod and M6 screw threads
Front adapter UMPA-1.0-HL for use with integrating sphere port-frame UMPF-1.0-HL
Storage: (-10 to 50) °C
Operation: (10 to 30) °C *8
*1 It is recommended to perform a dark signal measurement for every change in the integration time
|BTS2048-Series||BTS2048 'Not just another spectrometer' brochure|
|Produktname||Product Image||Description||Show product|
|S-SDK-BTS2048||Software Development Kit for BTS2048 variants.|