Hamamatsu H11901 Series Photomultiplier Tube (PMT) Module, 185 nm to 870 nm multialkali photocathode with UV glass 15 V Input Voltage, 1 V Control Voltage, 100 uA output current. This is an 0-24 VDC Ideal Spectroscopy photodiode variable bias module with included 24V, 2A DC power supply. This module is used to apply a DC bias to a compatible photodiode for greater sensitivity and linearity, and more rapid time response. The bias voltage is adjusted via a rotatable knob on the side of the bias module. The photodiode must be attached via the input female BNC connector. The output is monitored by connection to the output female BNC connector. Optionally, the 0-24 VDC bias voltage may be monitored via connection to the bias monitor female BNC connector for precise voltage control. Photodiodes are light detectors used in many spectroscopy applications. An unbiased photodiode acts as a photovoltaic device, which generates a single electron of current per excitation event. The photodiode output may be monitored either by measuring the current produced or by applying a resistance to the photodiode output and measuring the voltage build up as current is impeded. Photovoltaic operation is the simplest mode of action and has minimal dark current. Unfortunately it suffers from low amplification, nonlinear voltage response over large dynamic ranges, and slow response due to a short depetion width and large junction capacitance. Unbiased photodiodes are best for slow or very low light applications. Photodiodes may be reverse biased to change their response from photovoltaic to photoconductive. Under reverse biasing the depletion width increases, the junction capacitance decreases, and the response speeds up. The current response is amplified and becomes more linear over a larger dynamic range than in photovoltaic mode. The cost of these enhancements is increased dark noise and the propagation of electrical artifacts from the biasing power supply to the photodiode output signal. Using a clean power supply, such as Ideal Spectroscopy’s photodiode bias module, is critical for good response. Biasing photodiodes is best for applications where rapid time response or high linearity over a large range of light intensities is needed. Photodiode Variable Bias Module Specifications: Compatible Photodiodes: Anode-grounded, photoconductive Input Voltage: 24 VDC nominal, regulated, <100 mV ripple preferred Input Connection Type: Barrel Receptical, 5.5 mm OD, 2.1 mm ID Photodiode Bias Voltage: 0.8 - 23.4 VDC, variable Photodiode Bias Maximum Current: 3 A, <100 mA typical Photodiode Bias Load Regulation: ±2% typical Photodiode Bias Line Regulation: ±1% typical Photodiode Bias Ripple: <50 mV peak-peak at typical load Photodiode Bias Connection: BNC female, center positive Bias Monitor Voltage: 0.8 - 23.4 VDC, variable Bias Monitor Connection: BNC female Output Voltage: 0 - 5 V typical Output Connection: BNCfFemale Operating Temperatures: -40 to 85 °C Operating Humidity: <85% RH non-condensing 24V DC Power Supply Specifications: Input Voltage: 90 - 240 VAC Input Frequency: 47-63 Hz Output Voltage: 24.0±1.2 VDC Output Voltage Ripple: ±1% Rated Output Current: 2.5 A Input Connector: NEMA 1-15P Output Connector: Barrel, 5.5 mm OD, 2.1 mm ID Output Connector Polarity: Center positive Safety Approvals: UL60950-1, cUL60950-1 EMC Approvals: FCC

Mounting Gasket for Hamamatsu Photomultiplier Tube (PMT) Module, Buna-N Rubber This mounting gasket is designed for use with Hamamatsu H11901-04 Series and H11901 Series Photomultiplier Tube (PMT) Modules. Made from durable Buna-N (Nitrile) rubber, it provides an effective light-tight seal between the PMT housing and the front mounting surface. This Gasket features an adhesive backing for ease in assembling/mounting. During operation, it prevents ambient room light from leaking into the photomultiplier, ensuring accurate, low-noise signal detection. The gasket is precision-sized to fit Ideal Vacuum PMT housings and offers excellent resistance to compression set and environmental wear. FeaturesCompatible with Hamamatsu H10720, H10721, H10722, H10723, H11900, H11901, H11902, H11903, H11526, H11706, H12056, H10682, H11890, H12386, H14600, & H14601Series PMT Modules Designed for use with Ideal Vacuum PMT Housings Constructed from high-quality Buna-N rubber for reliable sealing performance Prevents light leakage during photomultiplier operation Long-lasting durability and stable sealing under repeated use Adhesive backing ApplicationsLaboratory photomultiplier setups Optical detection systems Scientific and industrial instrumentation

Hamamatsu H11901 Series Photomultiplier Tube (PMT) Module, 230 nm to 920 nm extended red multialkali photocathode with borosilicate glass. 15 V Input Voltage, 1 V Control Voltage, 100 uA output current. This is an 0-24 VDC Ideal Spectroscopy photodiode variable bias module with included 24V, 2A DC power supply. This module is used to apply a DC bias to a compatible photodiode for greater sensitivity and linearity, and more rapid time response. The bias voltage is adjusted via a rotatable knob on the side of the bias module. The photodiode must be attached via the input female BNC connector. The output is monitored by connection to the output female BNC connector. Optionally, the 0-24 VDC bias voltage may be monitored via connection to the bias monitor female BNC connector for precise voltage control. Photodiodes are light detectors used in many spectroscopy applications. An unbiased photodiode acts as a photovoltaic device, which generates a single electron of current per excitation event. The photodiode output may be monitored either by measuring the current produced or by applying a resistance to the photodiode output and measuring the voltage build up as current is impeded. Photovoltaic operation is the simplest mode of action and has minimal dark current. Unfortunately it suffers from low amplification, nonlinear voltage response over large dynamic ranges, and slow response due to a short depetion width and large junction capacitance. Unbiased photodiodes are best for slow or very low light applications. Photodiodes may be reverse biased to change their response from photovoltaic to photoconductive. Under reverse biasing the depletion width increases, the junction capacitance decreases, and the response speeds up. The current response is amplified and becomes more linear over a larger dynamic range than in photovoltaic mode. The cost of these enhancements is increased dark noise and the propagation of electrical artifacts from the biasing power supply to the photodiode output signal. Using a clean power supply, such as Ideal Spectroscopy’s photodiode bias module, is critical for good response. Biasing photodiodes is best for applications where rapid time response or high linearity over a large range of light intensities is needed. Photodiode Variable Bias Module Specifications: Compatible Photodiodes: Anode-grounded, photoconductive Input Voltage: 24 VDC nominal, regulated, <100 mV ripple preferred Input Connection Type: Barrel Receptical, 5.5 mm OD, 2.1 mm ID Photodiode Bias Voltage: 0.8 - 23.4 VDC, variable Photodiode Bias Maximum Current: 3 A, <100 mA typical Photodiode Bias Load Regulation: ±2% typical Photodiode Bias Line Regulation: ±1% typical Photodiode Bias Ripple: <50 mV peak-peak at typical load Photodiode Bias Connection: BNC female, center positive Bias Monitor Voltage: 0.8 - 23.4 VDC, variable Bias Monitor Connection: BNC female Output Voltage: 0 - 5 V typical Output Connection: BNCfFemale Operating Temperatures: -40 to 85 °C Operating Humidity: <85% RH non-condensing 24V DC Power Supply Specifications: Input Voltage: 90 - 240 VAC Input Frequency: 47-63 Hz Output Voltage: 24.0±1.2 VDC Output Voltage Ripple: ±1% Rated Output Current: 2.5 A Input Connector: NEMA 1-15P Output Connector: Barrel, 5.5 mm OD, 2.1 mm ID Output Connector Polarity: Center positive Safety Approvals: UL60950-1, cUL60950-1 EMC Approvals: FCC

Hamamatsu High Voltage Power Supply Socket Assembly (DP Type), Fits 28 mm Side-On PMTs, 15 V input voltage. 1V control voltage, 1200 V output current, 100 uA output current. This is an 0-24 VDC Ideal Spectroscopy photodiode variable bias module with included 24V, 2A DC power supply. This module is used to apply a DC bias to a compatible photodiode for greater sensitivity and linearity, and more rapid time response. The bias voltage is adjusted via a rotatable knob on the side of the bias module. The photodiode must be attached via the input female BNC connector. The output is monitored by connection to the output female BNC connector. Optionally, the 0-24 VDC bias voltage may be monitored via connection to the bias monitor female BNC connector for precise voltage control. Photodiodes are light detectors used in many spectroscopy applications. An unbiased photodiode acts as a photovoltaic device, which generates a single electron of current per excitation event. The photodiode output may be monitored either by measuring the current produced or by applying a resistance to the photodiode output and measuring the voltage build up as current is impeded. Photovoltaic operation is the simplest mode of action and has minimal dark current. Unfortunately it suffers from low amplification, nonlinear voltage response over large dynamic ranges, and slow response due to a short depetion width and large junction capacitance. Unbiased photodiodes are best for slow or very low light applications. Photodiodes may be reverse biased to change their response from photovoltaic to photoconductive. Under reverse biasing the depletion width increases, the junction capacitance decreases, and the response speeds up. The current response is amplified and becomes more linear over a larger dynamic range than in photovoltaic mode. The cost of these enhancements is increased dark noise and the propagation of electrical artifacts from the biasing power supply to the photodiode output signal. Using a clean power supply, such as Ideal Spectroscopy’s photodiode bias module, is critical for good response. Biasing photodiodes is best for applications where rapid time response or high linearity over a large range of light intensities is needed. Photodiode Variable Bias Module Specifications: Compatible Photodiodes: Anode-grounded, photoconductive Input Voltage: 24 VDC nominal, regulated, <100 mV ripple preferred Input Connection Type: Barrel Receptical, 5.5 mm OD, 2.1 mm ID Photodiode Bias Voltage: 0.8 - 23.4 VDC, variable Photodiode Bias Maximum Current: 3 A, <100 mA typical Photodiode Bias Load Regulation: ±2% typical Photodiode Bias Line Regulation: ±1% typical Photodiode Bias Ripple: <50 mV peak-peak at typical load Photodiode Bias Connection: BNC female, center positive Bias Monitor Voltage: 0.8 - 23.4 VDC, variable Bias Monitor Connection: BNC female Output Voltage: 0 - 5 V typical Output Connection: BNCfFemale Operating Temperatures: -40 to 85 °C Operating Humidity: <85% RH non-condensing 24V DC Power Supply Specifications: Input Voltage: 90 - 240 VAC Input Frequency: 47-63 Hz Output Voltage: 24.0±1.2 VDC Output Voltage Ripple: ±1% Rated Output Current: 2.5 A Input Connector: NEMA 1-15P Output Connector: Barrel, 5.5 mm OD, 2.1 mm ID Output Connector Polarity: Center positive Safety Approvals: UL60950-1, cUL60950-1 EMC Approvals: FCC

Hamamatsu Photomultiplier Tube: 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 525µA/lm Photomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R8396 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R3896 PMT’s have a Spectral Response of 185 to 900nm and a Quantum Efficiency of 30% at 260nm and 14% at 633 nm.

Hamamatsu Photomultiplier Tube: 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 250µA/lmPhotomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R928 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R928 PMT’s have a Spectral Response of 185 to 900nm and a Quantum Efficiency of 25% at 260nm and 9% at 600 nm.

Hamamatsu Photomultiplier Tube: R955 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 250µA/lmPhotomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R955 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R955 PMT’s have a Spectral Response of 160 to 900nm and a Quantum Efficiency of 29% at 260nm. A complete specifiaction manual is at downloads to the side.

Hamamatsu Photomultiplier Tube: 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 650µA/lmPhotomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R10699 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R10699 PMT’s have a Spectral Response of 185 to 900nm and a Quantum Efficiency of 20% at 600nm and 10% at 780 nm.

Hamamatsu Photomultiplier Tube: 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 280µA/lmPhotomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R13456 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R13456 PMT’s have a Spectral Response of 185 to 980nm and a Quantum Efficiency of 25% at 300nm and 9% at 600 nm.

Hamamatsu Photomultiplier Tube: 28mm Diameter Photocathode, 9-Stage, Side-On, Cathode Luminous Sensitivity: 650µA/lmPhotomultiplier tubes (PMT) are extremely sensitive light detectors which amplify the current produced by incident light, allowing individual photons to be registered and observed. PMT’s are used in a variety of applications which require ultra-sensitive photometric capabilities such as: Biomedical Analysis: Florescence Immuno Assy, Flow Cytometer, MTP Reader Environmental Monitoring: NOx Analyzer Spectroscopy: UV-VIS Spectrometer, Fluorescence Spectrometer, Atomic Absorption, Raman Spectrometer Semiconductor Industry: Wafer Inspection, Particle Counter These R12829 PMT’s are side-on photomultiplier tubes, using a circular-cage type electron multiplier which has the benefits of compactness and fast response time. Side-on PMT’s often demonstrate higher quantum efficiencies than head-on (end-on) PMT’s having photocathodes of similar composition. Typical head on PMT’s use a Box and Grid type dynode setup and can experience slow response time in some applications. Side-on PMT’s are relatively low cost compared to head-on and are standard in photometrics. These R12829 PMT’s have a Spectral Response of 185 to 900nm and a Quantum Efficiency of 33% at 300nm and 10% at 800 nm.