Electrical and Optical Characteristics

Typical laser specifications at 25° C *

Parameter

Conditions

Symbol

LU1064C130

LU1064C200

LU1064C230

Unit

Maximum output power (1)

c.w.

Pop

130

200

230

W

Operating current (2)

c.w.

Iop

14.5

23

26.5

A

Peak wavelength

at Iop

l

1064 ± 10

1064 ± 10

1064 ± 10

nm

Spectral width (FWHM)

at Iop

Dl

2-9

2-9

2-9

nm

Threshold current

Ith

0.75

1.8

1.8

A

Operating voltage

Vf

21

22

25

V

Conversion efficiency

45

40

35

%

Wavelength tuning vs. temperature

l

/ T

0.3

0.3

0.3

nm / K

Wavelength tuning vs. operating current

l

/ I

1

1

1

nm / A

Weight

m

1200

1200

1200

g

Thermal resistance (bottom to temp. sensor)

Rth

0.04

0.04

0.04

K/W

Output fiber (SMA905)

Core diameter of output fiber

dcore

200

400

600

µm

Numerical aperture

NA

0.22

0.22

0.22

Temperature sensor (10 kOhm)

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

Power monitor

PD

5-30

5-20

5-30

mV/W

Options

Option 1: Red pilot laser

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

Ppilot

1-3

1-3

1-3

mW

Peak wavelength

l

pilot

635 ± 10

635 ± 10

635 ± 10

nm

Operating voltage

5

5

5

V

Option 2: Green pilot laser

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

Ppilot

1-2

1-2

1-2

mW

Peak wavelength

l

pilot

520 ± 10

520 ± 10

520 ± 10

nm

Operating voltage

8

8

8

V

Pilot power control

Ppilot_contr

0-5

0-5

0-5

V

Option 3: Water cooling base plate

Water temperature

T

<18

<18

<18

°C

Water quality

Industrial Water, no DI-water, filtered particle size <0.1mm

Minimum water flux

1.5

2

2.4

l/min

Option 4: Fiber sensor

Internal (resistive) fiber detection sensor signal voltage

12

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.

Avoid direct feedback from materials like mirrors, optics, processed material etc. back into laser module via the fiber cable by more than 10%.

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

(2) Do not exceed maximum forward current by more than 5% above given operating current and if given by the 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. Required flatness of customer heat sink 0.05mm over 150mm to achieve necessary contact to the heat sink.

(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: 100 W, Conversion efficiency: 0.4, Thermal resistance: 0.07 K/W, Internal temperature: 25 °C

Thermal load = 100 W * (1/0.4 - 1) = 150 W, Water temperature = 25 °C - 150 W * 0.07 K/W = 15 °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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