Molectron

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Information on Molectron / coherent laser power meters. Ultimately for the ezlaze project. I'm mostly interested in pyroelectric heads for pulsed power.

Ecosystem

Summary
Family Connector Sensor Compatible

Meters

Memory
J DB25 Joule:

J8 J25

J50

J100


Power:

OP-2

S10

3sigma

FieldMax-TOP

FieldMax-TO

FieldMate

25LC320

(SPI)

Joule sensor: J25 is the most common followed by J50. J8 seems rare

Power sensor: OP-2 might be the most common. S10 seems rare


I've been calling these JSA due to "JSA-BNC", but that name might not be correct

LM

(LabMax)

DB25 LM-2

LM-10

LM-30

LM-45

LM-100

4omega?
 24C04

(I2C)

LM-P DB25 LM-P10 LM-P EEPROM looks slightly different than LM and in fact the LabMax-TOP user manual mentions these sensors are not compatible
PM

(PowerMax)

DB25 PM10

PM150

PM-P (PowerMax-Pro)

PM5200 93C46N

(SPI)

Even if it was electrically compatible w/ JSA EEPROM format is completely different


Ecosystems:

  • J DB-25 smart probes
    • Interface: DB25
    • Also known as JSA?
    • 3sigma, FieldMax-TOP, FieldMax-TO, FieldMate
    • Intended to be used with J25, J50 power probes
    • I also have an S10 energy probe, seems to be compatible
  • LM DB-25 smart probes
    • Interface: DB25
    • Intended to be used with LM probes

Warning: J25 and LM are not compatible.

Other DB25 probes (none are known to be compatible):

  • Ophir
  • Laserpoint
  • Gentec
  • Newport

List of Molectron related power meters:

  • 3sigma
  • 4omega
  • FieldMate
  • FieldMax-TO
  • FieldMax-TOP
  • Fieldmaster
  • LabMax-TOP
    • Compatible with LM-, PM-, and PS- model thermopile sensors, and OP-2 and LM-2 model optical sensors. No adapters required.
    • Measures energy to 10000 pps and captures every pulse to 1000 pps with J-model and EnergyMax sensors
    • LabMax is not compatible with the legacy LM-P model energy sensors

PM official pinout for thermopile sensors


Lots of good info:

  • Energy Sensors Coherent J25.pdf
  • 2009_LMCCatalog86.pdf


There was a conversion box you could buy at one point though (thermal-smartsensor-adapter-data-sheet.pdf), so it might just be different EPROM format

  • JSA-BNC Adapter
  • 0012-2340: JSA-BNC Adapter for use with 3sigma, FieldMax-TOP, and FieldMax-P
  • 1056827: SmartSensor Adapter for use with 3sigma, FieldMax-TOP, FieldMax-TO,and FieldMate
  • Automatically configures itself to work with LM-model sensors


J25

TODO: figure out pinout, EEPROM format so I can recal and upgrade adapters

LM

3Sigma

File archive: 

3sigmaAppQuickRef.pdf
3sigmaLVDriverUG.pdf
3sigma_LV_Driver.zip
3sigma Users Manual.pdf
3sigmaWinApps.zip

Battery 

Ni-MH BATTERY
7.2V 3.8 A-h
MOLECTRON
P/N 0012-0100

JD1000

Power supply: CS-1203000 (12V @ 3A, center positive)

McMaster

J25LP-4 sensor

Came with 3 sigma in the trash

3Sigma output: 

Probe Resp: 1.827E+01 V/J @ 248 nm
Probe Cal Date Dec 8 2008

Head label: 

Responsivity
1.828e+1 V/J
Cal: 248 nm

COHERENT
Model: J25LP-4

COHERENT CALIBRATION TAG
DATE CALIB 12/08/08
TECH KH
NEXT DUE 12/08/09

Item #: 0010-8145
Serial #: 0437E03

Shell label: 

COHERENT
PROBE SERIAL NO. 0437E03


J25LP sensor

Came with JD1000. BNC output but no 25 pin adapter

Back: 

MODEL NO: J25LP
SERIAL NO: 238

RESPONSITIVITY
5.10 VOLT/JOULE
337.1 nm

S10 sensor

From 3Sigmal (eBay)


3Sigma output: 

Probe Resp: 2.570E-1 A/W @ 514 nm
Probe Cal Date Sep 10 2003

DB25 label: 

Molectron
MODEL NO.: S10
SERIAL NO. 0338H03

DB25 label: 

Molectron
SER NO 0338H03
CAL DATE 9/18/03
CAL DUE 9/18/04
TECH B DUNLAP
0011-6322
TRACETABLE TO NIST

Cable label: 0012-2530


25LC320

  • 32K SPI Bus Serial EEPROM
Pin Function Notes
1 Silkscreen: Th
2 Silkscreen: Py
3 Sensor + Silkscreen: SG
4 Silkscreen: S1


4, 6, 14,16 shorted

W3 to W4 jumper

5 EEPROM CSn Pullup resistor to VCC
6 4, 6, 14,16 shorted
7
8
9 Jumper N/C
10 Jumper 10-12 shorted
11 Jumper 10-12 shorted
12 Jumper 10-12 shorted
13 EEPROM VSS
14 4, 6, 14,16 shorted
15 Sensor -
16 4, 6, 14,16 shorted
17
18
19
20
21
22 EEPROM SCK
23 EEPROM SI
24 EEPROM SO
25 EEPROM VCC 2.5-5.5V
EEPROM wiring for read out
EEPROM pin Function DB25 pin Note
1 CSn 5
2 SO 24
3 WPn 25 VCC
4 VSS 13
5 SI 23
6 SCK 22
7 HOLDn 25 VCC
8 VCC 25

J-25MB-HE sensor

Cable label: 

COHERENT
Item# 1110748
Model: J-25MB-HE
Serial#: 0984E07R

Responsitivity
6.694e+0 V/J
Cal 1064 nm

LM-10

LM-10 HTD 250-10600nm 10mW-10w 500mJ/cm2 10ns @ 1064n Laser

Relatively cheap impulse buy to compare EEPROM formats

Significantly more complicated inside. Instead of being a simple BNC out there is a whole bundle of cases. Think this is "heated" version maybe though and there might be a dumber version


Atmel 24C04

  • 4KB I2C
  • PDIP8
  • I was going to make an adapter and figure out pinout, but I decided to just clip on instead
Pin Function Notes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25


3Sigma (eBay) meter

Came with CW sensor

3Sigma (dumpster dive) meter

Came w/ sensor + BNC adapter

Screen is messed up

Came with Lemo cable. Doesn't fit trigger ports or anything I can tell

JD1000 meter

Capacitor exploded when plugged in (presumably due to age). Didn't work after, although some lights turned on. Scrapped

Newport 835

Newport project: http://hololaser.kwaoo.me/electronics/Newport835.html

I just happen to also have a few Newport 835s. Unfortunately my inventory is:

  • Newport 835, S/N 1477: calibrated for 818-SL, S/N 3190
  • Newport 835, S/N 1502: calibrated for 818-SL, S/N 3165
  • Newport 818-SL, S/N 3191

...which is close but doesn't entirely match. Dumped the EPROM / calibration data though in case I want to play with it in the future

Liconix 45PM

My oldest laser power meter. Meter + head both have S/N 9110014.

Completely analog / calibrated via pots.

More info

Source code: https://github.com/JohnDMcMaster/molectron


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