Molectron
Information on Molectron / coherent laser power meters. Ultimately for the ezlaze project. I'm mostly interested in pyroelectric heads for pulsed power.
Contents
Ecosystem
Ecosystems:
- J DB-25 smart probes
- Interface: DB25
- Also known as JSA?
- 3sigma, FieldMax-TOP, FieldMax-TO, FieldMate.s
- 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
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
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 pins:
- 3 WPn
- 7 HOLDn
- 8 VCCn
|}
EEPROM wiring:
| EEPROM pin | Function | DB25 pin | |
|---|---|---|---|
| 1 | CSn | 5 | |
| 2 | SO | 24 | |
| 3 | WPn | N/C
(25) |
|
| 4 | VSS | 13 | |
| 5 | SI | 23 | |
| 6 | SCK | 22 | |
| 7 | HOLDn | N/C
(25) |
|
| 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
More info
Source code: https://github.com/JohnDMcMaster/molectron
Newport project: http://hololaser.kwaoo.me/electronics/Newport835.html
