Features

Laser Diode Mount for 14-pin Butterfly Package
ZIF Mounting Socket
Laser Enabled LED Indicator
User Defined Pin Out Configuration

The LM14S2 Universal 14-Pin Butterfly Laser Diode Mount is designed for use with all lasers and two-port electro-optic devices in a 14-pin butterfly package. The top surface has heat sink fins and a recessed region to mount the laser diode, resulting in a low profile package with a temperature coefficient of 3 °C/W. The LM14S2 also includes a laser diode TEC Lockout feature* that disables the laser when the TEC Controller is not active. The LM14S2 supports maximum laser and TEC currents of 5 A each. In order to utilize the TEC controller, the laser must have an integrated Thermal Electric Cooler (TEC) or Thermistor sensors. This mount also features a Zero Insertion Force (ZIF) socket, a remote safety interlock connection, and an LED to indicate that the laser diode is enabled.

The LM14S2 eliminates the restriction of fixed pin configuration mounts by using exchangeable configuration cards that plug into a connector located on the bottom of the mount. Two cards are delivered with the LM14S2. One card is pre-configured for both Type 1 and Type 2 lasers. See the Specs tab for definitions of these types. The second card is a user configurable card (LM14S2-UA) designed to allow custom wiring of the mount. Additional cards are available and can be ordered separately. Please note that even with an LM14S2-UA, only anode-grounded diodes can be used with the LM14S2 butterfly laser mount.

In addition to the configurable pin out feature, a Bias-T adapter is included, allowing for RF modulation of butterfly lasers specifically designed with this capability.

The LM14S2 is pin-for-pin compatible with all Thorlabs' benchtop laser diode and TEC controllers, and most of our platform laser and TEC controllers as well, eliminating the need for custom made interface cables.

* TEC Lockout only functions with Thorlabs' Laser and TEC Controllers and can be easily bypassed if not required.

Specifications

Item #	LM14S2
Maximum Laser Current	5A
Polarity of Laser Diode	AG
Polarity of Monitor Diode	Floating
Maximum TEC Current	5A
Temperature Sensor	Thermistor^†
Temperature Range^‡	0 to 70 °C
Temperature Coefficient of Heat Sink	3 °C/W
Dimensions	3.5" x 3.5" x1.25"
†) At 25 °C with 2 A TEC Current, integrated into laser package ‡) Depends on laser diode used

Pin Assignment of the 14-pin Sockets

Pin to Connector Configuration for Type 1		Pin to Connector Configuration for Type 2
1	TEC Anode	1	Thermistor Ground
2	Thermistor	2	Thermistor
3	PD Anode	3	LD Cathode (DC)
4	PD Cathode	4	PD Anode
5	Thermistor Ground	5	PD Cathode
6	N.C.	6	TEC Anode
7	PD Cathode	7	TEC Cathode
8	PD Anode	8	LD Anode, Ground
9	LD Cathode	9	LD Anode, Ground
10	LD Anode, Ground	10	N.C.
11	LD Cathode	11	LD Anode, Ground
12	N.C.	12	LD Cathode (RF)
13	LD Anode, Ground	13	LD Anode, Ground
14	TEC Cathode	14	N.C.

The custom configuration card can be used for any other PIN configuration. Additional cards can be ordered separately. Please use item number LM14S2-UA.

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Posted Comments:
Poster: serefocal	Posted Date: 2010-02-10 10:03:30.0
Dear Sir/Madam:What is the "LM14S2 Butterfly Laser Diode Mounts"s Heat Dissipation Capacity? May I learn? Thanks...

Poster: apalmentieri	Posted Date: 2010-02-10 08:58:39.0
A response from Adam at Thorlabs to serefocal: The LM14S2 is designed to be used with a temperature controller, like the TED200C. It has the ability of controlling the temperature between 0 and 70 degrees C. The temperature coefficient of the heat sink is 3 degreeC/W. I will email you directly to answer any other questions you may have.

Poster: klee	Posted Date: 2009-09-09 10:44:30.0
A response from Ken at Thorlabs to yuhengc: An applications engineer will contact you directly to discuss about the problem.

Poster: yuhengc	Posted Date: 2009-09-09 09:24:44.0
Dear Sir/Madam: We are using LM14S2. Recently we found the current waveform of DFB LD was not stable. The current drive seems to be OK. Since it is new one and I tested with two simulated diode in series. There was no problem. But when I connected to the LD. The current waveform ( monitored from the current feedback)was not constant. Even worst, after a period of fluctuation, it kept decreasing and finally went down to zero. Sometime, if I switched off the driver and powered up again. The current recovered. The LD is the NEL with a little difference layout of pin to type two laser. I am using type 2 configuration card with pin12 connected as the instruction from the manual. What ,do you think, is the reason?