4 ports Fluorescence Mini Cube - GCaMP

4 ports Fluorescence Mini Cube - GCaMP
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  • Dual excitation band fiber photometry measurements use a Fluorescence Mini Cube with 4 ports: one port for the functional fluorescence excitation light, one for the isosbestic excitation, one for the fluorescence detection, and one for the sample. The cube has dichroic mirrors to combine isosbestic and fluorescence excitations and separate the fluorescence emission and narrow bandpass filters limiting the excitation fluorescence spectrum. E stands for fluorescence excitation, IE for isosbestic excitation, F for fluorescence, and S for the sample port on the cube's schematic. The separation of functional and isosbestic fluorescence signals of GCaMP is possible with modulated light sources.

    The Intensity Adjustment Ring on the 460-490 nm LED light source reduces the source power below the LED driver's range if needed for low-power fiber photometry experiments.

  • Mini Cube
    Wavelength range 350 to 1100 nm
    Optical fiber compatibility - Core diameter 200 or 400 µm
    - NA 0.37 to 0.57
    Spectral bandwidth

    GCaMP :
    - Isosbestic Excitation 400-410 nm
    - Excitation 460-490 nm
    - Emission 500-550 nm

    Optical filter attenuation > OD 5 outside band
    Dimensions 57 mm x 63 mm x 26 mm
    Built-in Detectors
    Detector Sensitivity - 0.38 A/W @ 550 nm
    - 0.60 A/W @ 960 nm (peak)
    Amplification 3 levels : 1x, 10x, 100x
    Transimpedance gain - 2.0 E09 V / A (1x)
    - 2.0 E10 V / A (10x)
    - 2.0 E11 V / A (100x)
    Conversion gain
    @ 550 nm
    - 0.76 V / nW (1x)
    - 7.60 V / nW (10x)
    - 76.0 V / nW (100x)
    Saturation level
    @ 550 nm
    - 7.2 nW (1x)
    - 0.72 nW (10x)
    - 72 pW (100x)
    NEP < 12 fW/√Hz
    Bandwidth - DC : 0 - 1000 Hz
    - AC : 30 - 1000 Hz
    Electrical interface BNC
    Output Voltage 0.0 to 5.5 V
    Output impedance 50 Ω
    Sensor type Silicon photodiode
    Sensor Area 1 x 1 mm
    Input voltage 12 V DC (power supply included)
    Built-in LEDs
    Max Current 500 mA
    Emitter size 400 µm diameter - NA0.22
    Max Output Power
    (fibre 400 µm)
    LED 400-410 nm
    = 1.0 to 90 µW (adjustable)
    LED 460-490 nm
    = 1.5 to 120 µW (adjustable)
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