Manuals for lab equipment

Russian lock-in

Model number LIHV200

Available cells

RbCells

Technical notes

High quantum efficiency photo diodes around 795nm

Hamamatsu

  • S5106: Highest quantum efficiency; Surface mounted; Response: 0.6 A/W at 800 nm, 0.72 A/W at 960nm; $f_c$=20 MHz, $C_T$=40 pF. Data sheet
  • S6865-02: Highest quantum efficiency; Cased; Response: 0.6 A/W at 800 nm, 0.70 A/W at 960nm; Extremely slow: $T_R$=2.5 uS, or $f_c$=0.4 MHz, $C_T$=700 pF.
  • S3883: Less quantum efficiency, Response: 0.58 A/W at 800 nm, but fast; $f_c$=300 MHz, $C_T$=6 pF. Metallic 3 pins case. Used by Lvovsky group.
    • it is possible to order preselected ones from Hamamatsu with QE=99.5% at 780 nm and window removed

Not all photodiodes made equaly

There is no specs about linearity and saturation light power. But current observations are that shot noise grows as it should 3dB per doubling of the power (all measurements are done with 10kOhm transimpedance resistor)

  • S3883 can handle at least 20/2 mW or even 30/2 mW (corresponds to equivalent 20 V or more per photodiode.
  • S5106 satureates very quickly around 2V into 10 kOhm transimpedance resistor per photodiode
  • S8729 saturates around (3 to 7)mW/2 per photodiode According to Hamamtsu its depends on a shunt resistance (the bigger the better) but it is not quoted anywhere. Indirect sign would be quoted short circuit current (Isc) for given luminosity (the smaller the better). I (Eugeniy) think that it actially should depend on Rs (i.e short circuit resistance) but not a shunt resistance.

Silicon Sensor

Silicon Sensor sells decent collection of photodiodes with quite good quantum efficiency/responsivity and with much lower price, compare to Hamamatsu. Many of their products are sold through Mouser electronics. They also sell quad, avalance and wavelength sensitive photodiodes.

  • 718-PC1-7-TO52 sold below \$15, has low terminal capacitance $C_T$=2pF at 12V reversed bias, less then 10pF when non-biased. Metallic 3 pins case. Specs search for PC1-7.

Specs for various components used

  • Temperature control inside the shielding: RTD 3-Wire, 100 Ohm , .2" X .6" X .07" (?McMaster part number is 6568T38)

Drawings

VCSEL modulation

(courtesy of Sergey Zibrov)

Electronics Related

Guide how to solder

PCB fabrication

Resistor and Capacitor Recommendations

Recommendation for low noise boards http://www.ligo.caltech.edu/docs/T/T070016-A/T070016-A.pdf

In-house developed schematics

Home made balanced photodiode BalancedPhotodiode

DAVLL Filter Circuit DAVLL Filter Circuit

Voltage Controlled Oscillators (VCO)

voltageControlledAttenuators

Magnetometers

Commercial models

Prices are given for 01/2007

  • Alpha Lab Detector Technology: AlphaLab DC Milligauss Meter - single axis magnetometer (magnetoresistor-based), 0.01-2000mG measurement range, price $590 AlphaLab DC Milligauss Meter - triple axis magnetometer, 0.01-2000mG measurement range, price $1140

  • Applied Physics Systems: Model 539 triple axis magnetometer (fluxgate), 0.03-1000mG measurement range, price $1,495 Allows fast computer data aquisition

  • Walker Scientific FGM-3D2LN single axis magnetometer (fluxgate), 0.01-2000mG measurement range, price $2,760.00

DIY magnetometers

Degaussing (demagnetizing) of the magnetic shields

DegaussingMachine and DegaussingProcedure

Microwave equipment

Miteq amplifier technical specs

miteq.pdf

6.8GHz Oscillator

LabViewMonitoring

Cheap PZT (50 cents each)

Low voltage as well, about 1um per 15V

  • Mouser Part #: 81-7BB-27-4
  • Manufacturer Part #: 7BB-27-4
  • Manufacturer: Murata
  • Description: Piezo Alarms 4.6KHZ PIEZO ELEMENT Berkeley data DataLogs.zip

Linux related

See separate page [LinuxRelated]