Download Datasheet for sb2 Recommendations: Please

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 sb2
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 longer pulses, shorter period, or
higher voltage or current than specified in this document may cause damage
and will result in loss of warranty, unless agreed upon with Alpes Lasers!
WARNING: Beware of the polarity of the laser. This laser has to be powered with negative bias on the laser contact (= bonding pad, corresponding
to the label ”laser” on the LLH) and the positive bias on the base contact
(= submount, corresponding to the label ”base” on the LLH).
Emission
DN
UP
Figure 1: Support mounting for sb2 (please note that the laser is connected to the DN
pad drawned in blue)
1
sb2
sb2
0.8
-30C
0C
30C
0.7
0.6
P [mW]
0.5
0.4
0.3
0.2
0.1
0
959.5
960
960.5
961
961.5 962 962.5
Frequency [cm-1]
963
963.5
964
964.5
Figure 2: Output power as a function of the singlemode emission frequencies and temperatures
sb2
12
-30C
0C
30C
11.5
Uldd [V]
11
10.5
10
9.5
9
8.5
959.5 960
960.5 961
961.5 962 962.5
Frequency [cm-1]
963 963.5 964 964.5
Figure 3: DC voltage fed to LDD (Uldd) as a function of the singlemode emission frequencies and temperatures
2
sb2
λ[nm] ν[cm−1 ] P[mW]
10368.9
964.4
0.2
10390.1
962.5
0.1
10394.9
962
0.7
10414.3
960.2
0.1
10417.9
959.9
0.4
Temp[◦ C] ULDD [V]
-30
9
0
9
0
11
30
10
30
11.5
Ipulse [A]
2.2
2.2
2.95
2.64
3.21
Table 1 : singlemode optical output power as function of operating parameters
sb2
power (-30C )
voltage (-30C )
power (0C )
voltage (0C )
power (30C )
voltage (30C )
Max single mode power
8
Peak Voltage [V]
7
0.6
0.5
6
0.4
5
0.3
4
0.2
3
0.1
2
0
1
0
Light [mW] avg on power meter
9
0
0.5
1
1.5
2
2.5
Peak Current [A]
3
3.5
4
-0.1
4.5
Figure 4: peak voltage and avg power vs peak current (the solid squares indicate the
maximum singlemode emitted power)
3
sb2
sb2
8
7
Peak Voltage [V]
3.5
power (-30C )
voltage (-30C )
power (0C )
voltage (0C )
power (30C )
voltage (30C )
Max single mode power
3
2.5
6
2
5
1.5
4
1
3
0.5
2
0
1
0
Light [mW] avg on power meter
9
0
0.5
1
1.5
2
2.5
Peak Current [A]
3
3.5
4
-0.5
4.5
Figure 5: peak voltage and avg power vs peak current (including the multimode region)
Note: data taken with 50ns pulses, 2.5µs period.
For further information, please consult the starter kit manual
or the FAQ on http://www.alpeslasers.ch/faq.html !
WARNING: Operating the laser with longer pulses, shorter period, or
higher voltage than specified in this document may cause damage and
will result in loss of warranty, unless agreed upon with Alpes Lasers!
4
sb2
sb2
power (-30C )
current (-30C )
power (0C )
current (0C )
power (30C )
current (30C )
Max single mode power
4
Peak Current [A]
3.5
0.6
0.5
3
0.4
2.5
0.3
2
0.2
1.5
0.1
1
0
0.5
0
Light [mW] avg on power meter
4.5
0
2
4
6
8
10
DC Voltage fed to LDD [V]
12
-0.1
14
Figure 6: peak current and avg power vs LDD voltage (the solid squares indicate the
maximum singlemode emitted power)
sb2
4
3.5
Peak Current [A]
3.5
power (-30C )
current (-30C )
power (0C )
current (0C )
power (30C )
current (30C )
Max single mode power
3
2.5
3
2
2.5
1.5
2
1
1.5
0.5
1
0
0.5
0
Light [mW] avg on power meter
4.5
0
2
4
6
8
10
DC Voltage fed to LDD [V]
12
-0.5
14
Figure 7: peak current and avg power vs LDD voltage (including the multimode region)
Note: this device is monomode at low voltages only. It becomes bimode at
higher voltages
5
sb2
-30C 9.0V
-30C 13.0V
Spectral density (normalized to 1)
1.2
-30C 11.0V
sb2
1
0.8
0.6
0.4
0.2
0
10330
10340
10350
10360
10370
Wavelength [nm]
10380
10390
10400
Figure 8: spectra at −30◦ C for various LDD voltages
0C 13.0V
0C 9.0V
Spectral density (normalized to 1)
1.2
0C 11.0V
sb2
1
0.8
0.6
0.4
0.2
0
10350
10360
10370
10380 10390 10400
Wavelength [nm]
10410
10420
10430
Figure 9: spectra at 0◦ C for various LDD voltages
6
sb2
30C 13.0V
30C 10.0V
Spectral density (normalized to 1)
1.2
30C 11.5V
sb2
1
0.8
0.6
0.4
0.2
0
10380
10390
10400
10410
10420
Wavelength [nm]
10430
10440
10450
Figure 10: spectra at 30◦ C for various LDD voltages
30C 13.0V
30C 10.0V
30C 11.5V
0C 13.0V
0C 11.0V
0C 9.0V
-30C 11.0V
-30C 13.0V
Spectral density (normalized to 1)
1.2
-30C 9.0V
sb2
1
0.8
0.6
0.4
0.2
0
10320
10340
10360
10380 10400 10420
Wavelength [nm]
10440
10460
10480
Figure 11: spectra (overview from −30◦ C to 30◦ C) for various LDD voltages
7
sb2
30C 11.5V
0C 9.0V
-30C 9.0V
Spectral density (normalized to 1)
1.2
30C 10.0V
sb2
1
0.8
0.6
0.4
0.2
0
10340
10360
10380
10400
Wavelength [nm]
10420
10440
Figure 12: spectra (monomode only - overview from −30◦ C to 30◦ C) for various LDD
voltages
8
sb2