Download Datasheet for #sb1995 UP 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 #sb1995 UP
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 #sb1995 UP (please note that the laser is connected to
the UP pad drawned in blue)
1
#sb1995 UP
#sb1995 UP
0.9
-30C
-15C
0C
15C
30C
0.8
0.7
P [mW]
0.6
0.5
0.4
0.3
0.2
0.1
0
2234
2236
2238
2240
2242
Frequency [cm-1]
2244
2246
Figure 2: Output power as a function of the singlemode emission frequencies and temperatures
#sb1995 UP
12
-30C
-15C
0C
15C
30C
11.5
11
Uldd [V]
10.5
10
9.5
9
8.5
8
7.5
2234
2236
2238
2240
2242
Frequency [cm-1]
2244
2246
Figure 3: DC voltage fed to LDD (Uldd) as a function of the singlemode emission frequencies and temperatures
2
#sb1995 UP
λ[nm] ν[cm−1 ]
4452.7 2245.8
4453
2245.7
4453.3 2245.5
4457.7 2243.3
4458
2243.1
4458.3
2243
4462.7 2240.8
4463.1 2240.6
4463.5 2240.4
4467.6 2238.3
4467.9 2238.2
4468.3
2238
4472.1 2236.1
4472.4
2236
4472.8 2235.7
P[mW]
0.1
0.3
0.8
0.1
0.1
0.7
0.1
0.1
0.8
0.1
0.1
0.5
0.1
0.1
0.5
Temp[◦ C] ULDD [V]
-30
8
-30
10
-30
11
-15
8
-15
10
-15
11
0
8
0
10
0
11.5
15
8
15
10
15
11.5
30
8
30
10
30
11.5
Ipulse [A]
0.06
0.21
0.3
0.06
0.19
0.31
0.08
0.22
0.35
0.07
0.22
0.37
0.09
0.23
0.39
Table 1 : singlemode optical output power as function of operating parameters
power (-30C )
voltage (-30C )
power (-15C )
voltage (-15C )
power (0C )
voltage (0C )
power (15C )
voltage (15C )
power (30C )
voltage (30C )
Max single mode power
7
Peak Voltage [V]
6
5
0.8
0.6
0.4
4
3
0.2
2
0
1
0
0
0.05
0.1
0.15
0.2
0.25
Peak Current [A]
0.3
0.35
Light [mW] avg on power meter
#sb1995 UP
8
-0.2
0.4
Figure 4: peak voltage and average power vs peak current at 2% duty-cycle (50ns pulses
on the laser, 2.5µs period) (the solid squares indicate the maximum singlemode emitted
power)
3
#sb1995 UP
power (-30C )
current (-30C )
power (-15C )
current (-15C )
power (0C )
current (0C )
power (15C )
current (15C )
power (30C )
current (30C )
Max single mode power
0.35
Peak Current [A]
0.3
0.25
0.8
0.6
0.4
0.2
0.15
0.2
0.1
0
0.05
0
0
2
4
6
8
DC Voltage fed to LDD [V]
10
Light [mW] avg on power meter
#sb1995 UP
0.4
-0.2
12
Figure 5: peak current and average power vs LDD voltage at 2% duty-cycle (50ns pulses
on the laser, 2.5µs period) (the solid squares indicate the maximum singlemode emitted
power)
4
#sb1995 UP
5
#sb1995 UP
Spectral density (normalized to 1)
-0.2
2234
0
0.2
0.4
0.6
0.8
1
1.2
2236
2238
2240
2242
Wavenumber [cm-1]
2244
2246
Figure 4: spectra at different temperatures for various LDD voltage (22ns pulses on the laser)
30C 11.5V
30C 10.0V
30C 8.0V
15C 11.5V
15C 10.0V
15C 8.0V
0C 11.5V
0C 10.0V
0C 8.0V
-15C 11.0V
-15C 10.0V
-15C 8.0V
-30C 11.0V
-30C 10.0V
-30C 8.0V