Recommendations - Alpes Lasers

Quantum Cascade Solutions

Passage Max.-Meuron 1-3 CH-2000 Neucha?tel

Case Postale 1766

Switzerland

Tel: +41 32 729 95 10

Fax: +41 32 721 36 19

Datasheet for #sbcw6472 DN

Recommendations:

Please read the User Manual and have a look at the FAQ at



WARNING: Operating the laser with higher current or voltage than specified in this document may cause damage and will result in loss of warranty,

unless Alpes Lasers has permitted to do so!

WARNING: Beware of the polarity of the laser. This laser has to be

powered with negative current on the laser contact (= bonding pad, corresponding to the label ¡±laser¡± on the LLH) and the positive current on the

base contact (= submount, corresponding to the label ¡±base¡± on the LLH).

To use with a power-supply ILX Lightwave LDX-3232 or equivalent.

Emission

DN

UP

Figure 1: Support mounting for #sbcw6472 DN (please note that the laser is connected

to the DN pad drawned in blue)

1

#sbcw6472 DN

#sbcw6472 DN

7

-30C

-20C

-10C

0C

10C

6

P [mW]

5

4

3

2

1

0

827

827.5

828

828.5

829

829.5

Frequency [cm-1]

830

830.5

831

Figure 2: Output power as a function of the singlemode emission frequencies and temperatures

#sbcw6472 DN

0.9

-30C

-20C

-10C

0C

10C

0.85

I [A]

0.8

0.75

0.7

0.65

0.6

827

827.5

828

828.5

829

829.5

Frequency [cm-1]

830

830.5

831

Figure 3: Applied DC current as a function of singlemode emission frequencies and temperatures

2

#sbcw6472 DN

¦Í[cm?1 ] P[mW] Temp[? C]

830.5

0

-30

830.4

1.5

-30

830.2

3.4

-30

830

4.8

-30

829.8

5.7

-30

829.5

6.1

-30

829.9

0.1

-20

829.7

1.3

-20

829.5

2.8

-20

829.3

3.9

-20

829.1

4.5

-20

829.1

0.1

-10

829

0.8

-10

828.8

2

-10

828.6

2.8

-10

828.4

3.2

-10

828.4

0

0

828.3

0.4

0

828.1

1.4

0

827.9

2

0

827.5

0.1

10

827.4

0.6

10

¦Ë[nm]

12040.4

12042.9

12045.4

12048.5

12051.8

12055.5

12050.1

12052.6

12055.3

12058.2

12061.2

12060.7

12062.7

12065.6

12068.3

12071.8

12071.9

12073

12076

12079.4

12084.6

12086.8

ULASER [V]

9

9.2

9.5

9.7

10

10.2

9.1

9.3

9.5

9.8

10

9.2

9.4

9.6

9.8

10.1

9.3

9.4

9.6

9.9

9.5

9.7

I[A]

0.64

0.68

0.72

0.76

0.8

0.84

0.68

0.72

0.76

0.8

0.84

0.73

0.76

0.8

0.84

0.88

0.78

0.8

0.84

0.88

0.85

0.88

Table 1 : singlemode optical output power as function of operating parameters

#sbcw6472 DN

power (-30C )

voltage (-30C )

power (-20C )

voltage (-20C )

power (-10C )

voltage (-10C )

power (0C )

voltage (0C )

power (10C )

voltage (10C )

Max single mode power

10

Voltage [V]

8

5

4

3

6

2

4

1

2

0

Light [mW] avg on power meter

12

0

0

0.1

0.2

0.3

0.4

0.5

Current [A]

0.6

0.7

0.8

-1

0.9

Figure 4: voltage and avg power vs current in continuous-wave operation (the solid squares

indicate the maximum singlemode emitted power)

3

#sbcw6472 DN

#sbcw6472 DN

10

8

Voltage [V]

8

power (-30C )

voltage (-30C )

power (-20C )

voltage (-20C )

power (-10C )

voltage (-10C )

power (0C )

voltage (0C )

power (10C )

voltage (10C )

Max single mode power

7

6

5

4

6

3

4

2

1

2

Light [mW] avg on power meter

12

0

0

0

0.1

0.2

0.3

0.4

0.5

Current [A]

0.6

0.7

0.8

-1

0.9

Figure 5: voltage and avg power vs current in continuous-wave operation (including the

multimode region)

Note: at -30C: Ith=0.62A / Vth=8.8V (2-wires measurements). Maximum operation

current: 0.88A for all temperatures.

4

#sbcw6472 DN

5

#sbcw6472 DN

Spectral density (normalized to 1)

-0.2

0

0.2

0.4

0.6

0.8

1

1.2

800

805

Figure 4: spectra at different temperatures for various DC currents

810

815

820

Wavenumber [cm-1]

825

830

10C

10C 0.88A

0.85A

0C 0.88A

0C

0.84A

0C

0.8A

-10C

0C

0.78A

0.88A

-10C

0.84A

-10C

0.8A

-20C

0.88A

-10C

0.76A

-20C

-10C

0.84A

0.73A

-30C

0.88A

-20C

0.8A

-30C

0.84A

-20C

0.76A

-30C

-20C

0.8A

0.72A

-20C

0.68A

-30C

0.76A

-30C

0.72A

-30C 0.64A

0.68A

-30C

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