Electrical and Optical Characteristics (Typical laser specifications at 25° C *)

Parameter

Conditions

808 nm &

808 nm &

Unit

1470 nm in 200 µm

1470 nm 400µm

808 nm & 1470 nm

Maximum output power (1)

Pop 808nm (c.w.)

30

45

W

Pop 1470nm (c.w.)

20

35

W

Peak wavelength (at Iop)

lpeak @ 808nm

808 ± 10

808 ± 10

nm

lpeak @ 1470nm

1470 ± 20

1470 ± 20

nm

Forward current / voltage (2)

Iop / Vop @ 808nm

7 / 12

11 / 12

A / V

Iop / Vop @ 1470nm

11 / 10

20 / 9

A / V

Threshold current

lth @ 808nm

1.7

3

A

lth @ 1470nm

1.1

1.7

A

Fiber core diameter

200

400

µm

Other General Features

Conversion efficiency

@ 808nm

35

35

%

@ 1470nm

20

20

%

Spectral shift with temp.

lT_Shift_808nm

0.3

0.3

nm / K

Spectral shift with temp.

lT_Shift_1470nm

0.7

0.7

nm / K

Fiber centricity

<10

<10

µm

Numerical Aperture

NA

0.22

0.22

Fiber connector type

SMA905

SMA905

Temperature sensor

LM35, NTC (10k) or PT100/1000 (please specify)

Weight

m

1200

1200

g

Thermal resistance (from bottom to intern. temp. sensor) Rth

0.04

0.04

K/W

Options

Option 1: Red Pilot laser

C.w. output power min. value (4)

Ppilot

1-3

1-3

mW

Peak wavelength

l

pilot

635 ± 10

635 ± 10

nm

Operating voltage

5

5

V

Current consumption

100

100

mA

Option 2: Green pilot laser

C.w. output power min. value (4)

Ppilot

1-2

1-2

mW

Peak wavelength

l

pilot

520 ± 10

520 ± 10

nm

Operating voltage

8

8

V

Pilot power control

Ppilot_contr

0-5

0-5

V

Option 3: water cooling base plate

Water temperature

T

<18

<18

°C

Minimum water flux (industrial water, no DI-water)

0.6

1.5

l/min / (100) W

Option 4: Fiber sensor

Internal (resistive) fiber detection sensor supply voltage

12

V

Internal (resistive) fiber detection sensor signal voltage

12

V

A second fiber sensor is an external inductive sensor with three wire cable (Vcc=12V, GND, Signal 12/2V when fiber is plug/not plugged)

Notes: * taken at internal temperature sensor - power drop read note (3) ** we recommend to operate the laser above dew point

(1) Power is measured ex fiber according to given fiber specifications including measures and tolerances of fiber and ferrules for uncoated fiber facets.

With AR coated (AR <0.7%) fiber end facet at the laser module side the power ex fiber can be increased by 20%. Avoid direct feedback from materials like mirrors, optics,

processed material etc. back into laser module via the fiber cable by more than 10%. Given value is the maximum power level. For given max. power level operating current

and voltage can deviate by max.10% from typcial values and is lower than maximum values. Please choose your laser driver design accordingly.

(2) Do not exceed maximum forward current for rated power as given above by more than 5% and if given by maximum current otherwise the laser diode may be damaged

(3) Rule of thumb: Power ex fiber decreases up to 5% (<1100nm) and up to 7% (>1400nm) every 10 °C temperature increase at internal temperature sensor. Lifetime

decreases by about factor of two every 10 °C.

(4) Red and green minimum pilot power is set at factory by customer request. Standard is 1 mW.

Calculation example of necessary water temperature for 10 W output power:

Thermal load = Output power * (1/conversion efficiency - 1), Water temperature = internal temperature - thermal load * Thermal resistance

Example: Output power: 10 W, Conversion efficiency: 0.2, Thermal resistance: 0.1 K/W, Internal temperature: 25 °C

Thermal load = 10 W * (1/0.2 - 1) = 40 W, Water temperature = 25 °C - 40 W * 0.1 K/W = 21 °C, (water flux must be adjusted accordingly)

Lumics GmbH Berlin. This specification is subject to change without notice.

We manufacture diode lasers.

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