Download Datasheet for #sbcw2852 DN Recommendations

Quantum Cascade Solutions
Passage Max.-Meuron 1-3 CH-2000 Neuchˆatel
Case Postale 1766
Switzerland
Tel: +41 32 729 95 10
Fax: +41 32 721 36 19
Datasheet for #sbcw2852 DN
Recommendations:
Please read the starter kit user manual (at least installation chapter 5), if
available, and have a look at the FAQ at http://www.alpeslasers.ch/alfaq.pdf
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 #sbcw2852 DN (please note that the laser is connected
to the DN pad drawned in blue)
1
#sbcw2852 DN
#sbcw2852 DN
70
-30C
-20C
-10C
0C
10C
60
P [mW]
50
40
30
20
10
0
1278
1279
1280
1281
1282 1283 1284
Frequency [cm-1]
1285
1286
1287
Figure 2: Output power as a function of the singlemode emission frequencies and temperatures
#sbcw2852 DN
0.6
-30C
-20C
-10C
0C
10C
0.55
0.5
I [A]
0.45
0.4
0.35
0.3
0.25
1278
1279
1280
1281 1282 1283 1284
Frequency [cm-1]
1285
1286
1287
Figure 3: Applied DC current as a function of singlemode emission frequencies and temperatures
2
#sbcw2852 DN
λ[nm] ν[cm−1 ]
7774.4 1286.3
7778.7 1285.6
7782.2
1285
7777.6 1285.7
7787.2 1284.2
7792.7 1283.2
7784.6 1284.6
7784.7 1284.6
7791.4 1283.5
7800.3
1282
7791.5 1283.5
7798.5 1282.3
7807.7 1280.8
7804.8 1281.3
7815.3 1279.5
7822.7 1278.3
P[mW]
0.4
6.5
37.7
13.5
53.5
66.4
0.6
6.1
29.8
48.9
0.1
15.5
32.5
0.3
16.6
1.2
Temp[◦ C] ULASER [V]
-30
8.7
-30
8.9
-30
9.4
-30
9.2
-30
9.7
-30
9.9
-20
8.8
-20
9.1
-20
9.5
-20
9.8
-10
9.1
-10
9.4
-10
9.8
0
9.3
0
9.7
10
9.7
I[A]
0.3
0.35
0.45
0.4
0.5
0.55
0.34
0.4
0.47
0.55
0.4
0.47
0.55
0.46
0.55
0.55
Table 1 : singlemode optical output power as function of operating parameters
#sbcw2852 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
9
8
Voltage [V]
7
6
60
50
40
30
5
4
20
3
10
2
0
1
0
Light [mW] avg on power meter
10
0
0.1
0.2
0.3
Current [A]
0.4
0.5
-10
0.6
Figure 4: voltage and avg power vs current in continuous-wave operation (the solid squares
indicate the maximum singlemode emitted power)
Note: at -30C: Ith=300mA / Vth= 8.7V (2-wires measurements).
Maximum operation current: 0.55A for all temperatures.
3
#sbcw2852 DN
4
#sbcw2852 DN
Spectral density (normalized to 1)
-0.2
0
0.2
0.4
0.6
0.8
1
1.2
1278
1280
1282
1284
Wavenumber [cm-1]
1286
Figure 3: spectra at different temperatures for various DC currents.
10C 0.55A
0C 0.55A
-10C 0.55A
0C 0.46A
-20C 0.55A
-10C 0.47A
-30C 0.55A
-10C 0.40A
-20C
0.47A
-30C 0.50A
-20C 0.40A
0.34A
-30C 0.45A
-30C 0.35A
-30C 0.40A
-30C 0.30A
1288
Spectral density (normalized to 1)
-30C 0.30A
-30C 0.40A
-30C 0.35A
-30C 0.45A
-30C 0.55A
1.2
-30C 0.50A
#sbcw2852 DN
1
0.8
0.6
0.4
0.2
0
-0.2
1282
1283
1284
1285
Wavenumber [cm-1]
1286
1287
Figure 5: spectra at -30C with mode jumping for current higher than 0.35A (see Fig. 3)
Spectral density (normalized to 1)
-20C 0.40A
0.34A
-20C 0.55A
1.2
-20C 0.47A
#sbcw2852 DN
1
0.8
0.6
0.4
0.2
0
-0.2
1281
1282
1283
1284
Wavenumber [cm-1]
1285
1286
Figure 6: spectra at -20C with mode jumping for current higher than 0.34A; same mode
compared to spectra at -30C with current higher than 0.35A (se Fig. 3)
5
#sbcw2852 DN
Spectral density (normalized to 1)
-10C 0.40A
-10C 0.47A
0C 0.46A
0C 0.55A
10C 0.55A
1.2
-10C 0.55A
#sbcw2852 DN
1
0.8
0.6
0.4
0.2
0
-0.2
1277
1278
1279
1280 1281 1282
Wavenumber [cm-1]
1283
1284
1285
Figure 7: spectra between -10C and 10C for various DC currents; same mode compared
to spectra at -30C with current higher than 0.35A (see Fig. 3)
6
#sbcw2852 DN