– 4 –

SLD322XT

Temperature dependence of far field pattern

(Perpendicular to junction)

Angle [degree]

–90

–60

–30

0

30

60

90

Tth = 25

°C

Tth = 10

°C

Tth = –5

°C

790

800

820

810

Dependence of wavelength

Tth – Thermistor temperature [

°C]

–10

0

10

20

30

Po = 500mW

0

0.5

1.0

Differential efficiency vs. Temperature characteristics

Tth – Thermistor temperature [

°C]

–10

0

10

20

30

10

5

0

50

0

∆T [°C]

TE cooler characteristics 2

100

Tth = 25

°C

2.0A

1.5A

2.5

A

2.0A

1.5A

1.0

A

0.5

A

∆

T

VS

Q

0.5A

5

4

3

2

1

0

1.0A

0

10

5

0

50

∆T – Temperature difference [°C]

∆T: Tc – Tth

Tth: Thermistor temperature

Tc: Case temperature

TE cooler characteristics 1

100

Tc = 33

°C

2.0A

1.5A

2.0A

0.5A

5

4

3

2

1

0

1.0A

50

10

5

1

–10 0

10 20 30 40 50 60 70

Thermistor characteristics

Tth – Thermistor temperature [

°C]

TE cooler characteristics