Alpes Lasers . TC-3 Datasheet download pdf (Page 15)

1.2 QCL housings and packages

1.2.1. Laboratory Laser Housing (LLH)

The LLH consists in a housing including a TEC and encapsulating the QCL chip;

it is designed to ease its installation and replacement. Its internal temperature is

controlled by a Peltier junction and a PT-100 temperature sensor, and can go down

to less than -30

◦

C. Heat should be dissipated using one of the setups described in

section 3.1.2. The LLH temperature is controlled by the TC-3 (see section 5.1).

Figure 1.3.: LLH housing.

Figure 1.4.: LLH housing connection panel and window.

2014 SA 5

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 125 126

2014 ALPES LASERS SA 1
2014 SA iii 3
Typesetting conventions 6
Contents 7
2014 SA ix 9
1. Overview 11
1.1. ALPES LASERS products 12
1.1.3. QCL mounting 13
2014 SA 5 15
1.2.3. TO3 Housing 17
1.3. Starter kit 18
2014 SA 9 19
Chapter 1: Overview 20
10 QCL user’s manual v3.1.3 20
2014 SA 11 21
2014 SA 13 23
1.4. Peripherals 25
1.5. Fields of applications 26
1.5.2. THz 27
2. Safety 29
• Visible damage 30
• Severe transport stress 30
2.2. Notation 31
2.2.1. Symbols and labels 32
ASER radiation hazard 33
3. Installation 35
3.1. Prerequisites 36
2014 SA 27 37
3.1.2. Cooling 38
3.2. Receiving procedure 39
2014 SA 31 41
3.3. Connections 42
2014 SA 33 43
3.3.1. LLH 44
3.3.2. HHL 45
3.3.3. TO3 46
3.3.4. LDD 47
3.3.5. CTL cable 48
3.3.6. CTLm cable 49
3.3.7. TC-LLH cable 50
3.3.8. TC-HHL cable 50
3.3.9. CPL cable 50
3.3 Connections 51
Figure 3.11.: CPL cable 51
3.3.10. CIL cable 52
3.3.11. Connection procedure 53
• LLH housing in pulsed mode: 54
• HHL housing in pulsed mode: 54
4. QCL Operation 55
4.1. Principle of operation 56
4.2. ALPES LASERS datasheet 57
4.3. QCL spectra 58
4.3 QCL spectra 59
Chapter 4: QCL Operation 60
50 QCL user’s manual v3.1.3 60
2014 SA 51 61
• for a temperature of 0 62
2014 SA 53 63
LPES LASERS QCL is 64
4.4.2. Maximum LDD voltage 65
4.4.3. Other DFB QCL plots 66
4.5. Beam Properties 67
5. Starter Kit Operation 69
5.1.1. Quick Start Procedure 70
2014 SA 61 71
2014 SA 63 73
5.2.1. TCU startup 75
5.2.2. Internal/external mode 75
5.2.3. TCU interlock 76
Ω TTL Gate IN 77
Ω TTL Output 77
Ω TTL Trig OUT 77
Ω TTL Trig IN 77
73*LQWHUQDOVLJQDO 78
*DWH,QH[WHUQDOVLJQDO 78
2XWSXWVLJQDO 78
5.3 TTL Pulse Generator (TPG) 79
LPES LASERS or 80
5.3.3. Maximum duty cycle 81
5.4. General procedures 82
2014 SA 73 83
5.4.2. QCL shutdown 84
6. Technical speciﬁcations 85
76 QCL user’s manual v3.1.3 86
2014 SA 77 87
Figure 6.6.: HHL housing 89
Figure 6.8.: NS mounting 90
80 QCL user’s manual v3.1.3 90
Figure 6.9.: ST mounting 91
7. Maintenance 93
7.1.1. Handling 94
7.1.2. Contact set 95
86 QCL user’s manual v3.1.3 96
7.1.3. Procedure 97
2014 SA 89 99
7.2. Calibration procedures 100
2014 SA 91 101
7.2.2. TCU calibration 102
2014 SA 93 103
±1 Ω resistor. Note: 104
2014 SA 95 105
⇒ 0,99 A 106
⇒ 4,99 A 106
2014 SA 97 107
Chapter 7: Maintenance 108
98 QCL user’s manual v3.1.3 108
2014 SA 99 109
7.2.3. TPG calibration 111
102 QCL user’s manual v3.1.3 112
2014 SA 103 113
Ω . Choose 114
A.1. QCL wavelength range 115
A.2. QCL electrical response 116
B.1. Direct QCL voltage 117
LPES LASERS 118
B.3.1. Principle 119
B.3.2. Connection 119
B.3.3. Procedure 119
2014 SA 111 121
B.4. CW modulation 122
2014 SA 113 123
C.1. LN2 Dewar 125
C.2. Others 126

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Alpes Lasers . TC-3 Datasheet Page 15

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