d2:spectroscopy_module_210
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d2:spectroscopy_module_210 [2016/08/30 18:26] – [Inputs, Outputs, and Controls] Michael Radunsky | d2:spectroscopy_module_210 [2020/09/03 19:40] – [Inputs, Outputs, and Controls] Michael Radunsky | ||
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* D2-210 Spectroscopy Module | * D2-210 Spectroscopy Module | ||
* VPN00463 SMA cable (6ft) | * VPN00463 SMA cable (6ft) | ||
- | Also look for: | ||
* VPN00410 Hirose-to-D Sub 9-pin (shipped under separate line item; specify for use with D2) | * VPN00410 Hirose-to-D Sub 9-pin (shipped under separate line item; specify for use with D2) | ||
* VPN00475 Hirose-to-Hirose power cord (shipped under separate line item; specify for use with ICE) | * VPN00475 Hirose-to-Hirose power cord (shipped under separate line item; specify for use with ICE) | ||
+ | * VPN00367 Adjustment tool | ||
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=====Specifications===== | =====Specifications===== | ||
<WRAP center round box 500px>< | <WRAP center round box 500px>< | ||
- | ^ ^ Value ^ Units ^ | + | ^ ^ Value ^ Units |
- | ^**Input Light Level** | + | ^ **Input Light Level** |
- | ^**Photodiode Amplifier** | + | ^ **Photodiode Amplifier** |
- | | < | + | | Transimpedance (signal) |
- | | < | + | | Bandwidth (signal) |
- | | < | + | | Noise @ 5 MHz | < |
- | ^Set Temperature | + | ^ Set Temperature |
- | ^Temperature Stability| | + | ^ Temperature Stability |
- | ^Beam Height| | + | ^ Beam Height |
- | ^Total package Size \\ (L x W x H)| 3.6 x 5 x 1.7 | inches | + | ^ Total package Size \\ (L x W x H) | 3.6 x 5 x 1.7 | inches |
</ | </ | ||
</ | </ | ||
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The D2-210 requires +5 and ±15 VDC and ground to operate. | The D2-210 requires +5 and ±15 VDC and ground to operate. | ||
- | If you are using the DB9-to-Hirose cable, but not a Vescent D2-005 power supply, <tabref connector> | + | If you are using the DB9-to-Hirose cable, but not a Vescent D2-005 power supply, <tabref connector> |
- | + | ||
- | < | + | |
=====Theory of Operation===== | =====Theory of Operation===== | ||
<WRAP center round box 620px> | <WRAP center round box 620px> | ||
- | [{{ : | + | < |
- | <WRAP center round box 420px> | + | <WRAP center round box 420px>< |
Input light passes through an adjustable λ/2 waveplate and polarizing beamsplitter (PBS) that directs a user-controlled portion of the beam to the vapor cells and detectors. | Input light passes through an adjustable λ/2 waveplate and polarizing beamsplitter (PBS) that directs a user-controlled portion of the beam to the vapor cells and detectors. | ||
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The remaining portion is passed through a fixed λ/2 waveplate and PBS to split off the pump beam from the probe beam. The pump beam is directed to the Output Optics assembly where it is combined with the probe beam on a PBS in a counter-propagating configuration. The pump beam is dumped through the reflection port of the PBS that separated the pump and probe and terminates on the wall of the housing. | The remaining portion is passed through a fixed λ/2 waveplate and PBS to split off the pump beam from the probe beam. The pump beam is directed to the Output Optics assembly where it is combined with the probe beam on a PBS in a counter-propagating configuration. The pump beam is dumped through the reflection port of the PBS that separated the pump and probe and terminates on the wall of the housing. | ||
- | The beam diameters were designed to provide enough photocurrent (~50-100μA) to give shot-noise-limited performance out to 5 MHz while limiting saturation broadening. | + | The beam diameters were designed to provide enough photocurrent (~50-100 μA) to give shot-noise-limited performance out to 5 MHz while limiting saturation broadening. |
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**Input Connector**** (****6-pin circular)** | **Input Connector**** (****6-pin circular)** | ||
+ | <WRAP center round important 60%> | ||
+ | </ | ||
- | Power and temperature control signals from the D2-series power bus or other power supply are made through a 6-pin circular connector ([[http:// | + | Power and temperature control signals from the D2-series power bus, the ICE-PB1, |
- | <WRAP center round box 900px>< | + | < |
- | ^ Hirose Pin ^ DB-9 Pin (if applicable) ^ Input Voltage | + | |
- | | 1 | 4 and 5 | + | <WRAP center round box 900px>< |
+ | ^ Hirose Pin\\ (VPN00410 and VPN00475) | ||
+ | | 1 | 4 and 5 | ||
| 2 | 8 | -7 V to -15 V | 100mA | See note below. | | | 2 | 8 | -7 V to -15 V | 100mA | See note below. | | ||
| 3 | 9 | +7 V to +15 V | 100 mA | See note below. | | | 3 | 9 | +7 V to +15 V | 100 mA | See note below. | | ||
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| 6 | 1 and 2 | +5 V Ground | | 6 | 1 and 2 | +5 V Ground | ||
</ | </ | ||
- | <wrap lo> | ||
- | <wrap lo> See D2-005 manual for pin out on D-Sub 9-pin connector.</ | ||
- | |||
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**Temperature Bias Adj.** | **Temperature Bias Adj.** | ||
- | For the Doppler subtraction option this control enables the user to input a small temperature difference between the reference and signal vapor cells. | + | [Note: this adjustment is only available on older D2-210 models.] |
This adjustment only has an effect with the -DS, Doppler Subtraction option. | This adjustment only has an effect with the -DS, Doppler Subtraction option. | ||
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**Tilt Plate** | **Tilt Plate** | ||
- | A polarizing beamsplitter (PBS) is fixed to a ball joint formed by a truncated steel ball held by a conformal brass ring. Two cone screws clamp the ring against the ball and fix the position of the PBS. See Alignment Procedure below for instructions on how to align and fix the PBS.{{ : | + | A polarizing beamsplitter (PBS) is fixed to a ball joint formed by a truncated steel ball held by a conformal brass ring. Two cone screws clamp the ring against the ball and fix the position of the PBS. See Alignment Procedure below for instructions on how to align and fix the PBS.<WRAP center round box 420px> |
+ | |||
+ | < | ||
**λ/2 Waveplate** | **λ/2 Waveplate** | ||
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A waveplate attached to the front plate by magnets can be used to select the splitting fraction of the Tilt Plate PBS. | A waveplate attached to the front plate by magnets can be used to select the splitting fraction of the Tilt Plate PBS. | ||
- | {{ : | + | <WRAP center round box 420px> |
+ | |||
+ | < | ||
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- | The following images are representative of spectroscopy for < | + | The following images are representative of spectroscopy for < |
+ | < | ||
- | {{ : | + | < |
- | {{ : | + | < |
d2/spectroscopy_module_210.txt · Last modified: 2024/03/27 15:58 by Thomas Bersano