Molectron

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

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

3Sigma

File archive:

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

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 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

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