User Tools

Site Tools


d2:spectroscopy_module_210

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
d2:spectroscopy_module_210 [2016/08/31 03:35]
Michael Radunsky [Theory of Operation]
d2:spectroscopy_module_210 [2019/06/25 22:53] (current)
Michael Radunsky [Inputs, Outputs, and Controls]
Line 27: Line 27:
   * 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
  
  
Line 45: Line 45:
 =====Specifications===== =====Specifications=====
 <WRAP center round box 500px><​tabcaption specs> <WRAP center round box 500px><​tabcaption specs>
-^ ^  Value  ^  Units  +                                   ^  Value          ^  Units   ​
-^**Input Light Level** ​ |  2< P <​1000 ​ |  mW  +^ **Input Light Level** ​             |  2< P <​1000 ​    ​|  mW      
-^**Photodiode Amplifier** ​       +^ **Photodiode Amplifier** ​          ​                ​         
-<​html>​ &​nbsp;&​nbsp;​ </​html>  ​Transimpedance (signal) |  40,​000 ​ |  Ω  +| Transimpedance (signal) ​           |  40,​000 ​        ​|  Ω       ​
-<​html>​ &​nbsp;&​nbsp;​ </​html>​Bandwidth (signal) |  5  |  MHz  +| Bandwidth (signal) ​                ​|  5              |  MHz     ​
-<​html>​ &​nbsp;&​nbsp;​ </​html>​Noise @ 5 MHz  |  <​80 ​ |  nV / <​HTML> ​<span style="​text-decoration:​ overline;">​Hz</​span></​HTML> ​+| Noise @ 5 MHz                      |  <​80 ​           |  nV /√Hz | 
-^Set Temperature ​ |  ~25 to 65  |  °C  +^ Set Temperature ​                   |  ~25 to 65      |  °C      
-^Temperature Stability| ​ <​0.1 ​ |  °C  +^ Temperature Stability ​             |  <​0.1 ​          ​|  °C      
-^Beam Height| ​ 0.95  |  inches ​ | +^ Beam Height ​                       |  0.95           ​|  inches ​ | 
-^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 ​ |
 </​tabcaption>​ </​tabcaption>​
 </​WRAP>​ </​WRAP>​
Line 78: Line 78:
  
 **Input Connector**** (****6-pin circular)** **Input Connector**** (****6-pin circular)**
 +<WRAP center round important 60%>​Never connect this device to its power supply when the power supply is switched on and supplying power. ​ Always turn off the power supply, make connections to the device, and then re-energize the power supply.
 +</​WRAP>​
  
-Power and temperature control signals from the D2-series power bus or other power supply are made through a 6-pin circular connector ([[http://​www.digikey.com/​product-search/​en?​KeyWords=HR10A-7TR-6SA(73)&​WT.z_header=search_go|HR10A-7TR-6SA(73)]]). ​ The pin definitions (pin numbers are marked on the connectors) are listed below. ​ <imgref image1> below may be useful.+Power and temperature control signals from the D2-series power bus, the ICE-PB1, ​or other power supply are made through a 6-pin circular connector ([[http://​www.digikey.com/​product-search/​en?​KeyWords=HR10A-7TR-6SA(73)&​WT.z_header=search_go|HR10A-7TR-6SA(73)]]). ​ The pin definitions (pin numbers are marked on the connectors) are listed below. ​ <imgref image1> below may be useful.
  
 <​imgcaption image1|Pin numbering on female Hirose 6-pin connector>​{{ ​ :​d2:​d2-160:​hirose-connector.png?​200 ​ }}</​imgcaption>​ <​imgcaption image1|Pin numbering on female Hirose 6-pin connector>​{{ ​ :​d2:​d2-160:​hirose-connector.png?​200 ​ }}</​imgcaption>​
Line 123: Line 125:
 **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. ​ In the fully CCW position the signal vapor cell heater gets all the current. ​ In the full CW position the reference cell heater gets twice the current as the signal cell.  This adjustment can be used to place the optimum point for Doppler Subtraction closer to zero Volts.+[Note: this adjustment is only available on older D2-210 models.] ​For the Doppler subtraction option this control enables the user to input a small temperature difference between the reference and signal vapor cells. ​ In the fully CCW position the signal vapor cell heater gets all the current. ​ In the full CW position the reference cell heater gets twice the current as the signal cell.  This adjustment can be used to place the optimum point for Doppler Subtraction closer to zero Volts.
  
 This adjustment only has an effect with the -DS, Doppler Subtraction option. This adjustment only has an effect with the -DS, Doppler Subtraction option.
Line 129: Line 131:
 **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.{{ :​d2:​d2-210:​tilt_plate.png?​nolink&​400 |}}+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> 
 + 
 +<​imgcaption tilt_plate|Input beam tilt plate adjustment>​{{ :​d2:​d2-210:​tilt_plate.png?​nolink&​400 |}}</​imgcaption></​WRAP>​
  
 **λ/2 Waveplate** **λ/2 Waveplate**
Line 135: Line 139:
 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.
  
-{{ :​d2:​d2-210:​halfwave_adjuster.jpg?​nolink&​400 |}}+<WRAP center round box 420px> 
 + 
 +<​imgcaption halfwaveplate|Half wave plate adjuster>​{{ :​d2:​d2-210:​halfwave_adjuster.jpg?​nolink&​400 |}}</​imgcaption></​WRAP>​
  
  
Line 184: Line 190:
  
  
-The following images are representative of spectroscopy for <​sup>​87</​sup>​Rb with and without Doppler subtraction. ​ Note that Doppler subtraction has a minimal effect on peak lock signal generated by dithering the laser (green traces).+The following images are representative of spectroscopy for <​sup>​87</​sup>​Rb with and without Doppler subtraction. ​ Note that Doppler subtraction ​(<imgref ds>​) ​has a minimal effect on peak lock signal generated by dithering the laser (green traces).
  
 +<​imgcaption image1|Pin numbering on female Hirose 6-pin connector>​{{ ​ :​d2:​d2-160:​hirose-connector.png?​200 ​ }}</​imgcaption>​
  
-{{ :​d2:​d2-210:​sas.jpg?​nolink |}} +<​imgcaption no-ds|Non-Doppler subtracted side- and peak-lock spectra>{{ :​d2:​d2-210:​sas.jpg?​nolink |}}</​imgcaption>​ 
-{{ :​d2:​d2-210:​sas_w_ds.jpg?​nolink |}}+<​imgcaption ds|Doppler subtracted side- and peak-lock spectra>{{ :​d2:​d2-210:​sas_w_ds.jpg?​nolink |}}</​imgcaption>​
d2/spectroscopy_module_210.1472639731.txt.gz · Last modified: 2016/08/31 03:35 by Michael Radunsky