RLD78MYA1

Laser diodes

2/3

!

!

Electrical and optical characteristics (Tc=25

°C)

Parameter

η

λ

Min.

−

−

−

0.1

0.05

8

20

−

−

−

770

60

Typ.

35

45

1.9

0.25

0.15

11

37

−

−

−

785

−

±2

±3

Max.

60

70

2.3

0.6

0.3

15

45

±100

810

−

Unit

mA

−

−

Po

=3mW

Po

=3mW

Po

Po

=3mW

Po

=3mW

f

=720kHz, ∆f=10kHz

mA

V

mW/mA

mA

deg

deg

deg

deg

µm

nm

dB

Conditions

Parallel deviation angle

Parallel divergence angle

Perpendicular deviation angle

Emission point accuracy

Peak emission wavelength

Perpendicular divergence angle

Monitor current

Differential efficiency

Operating voltage

Operating current

Threshold current

Signal-to-noise ratio

2mW

I(3mW)

−I(1mW)

Symbol

S / N

∆Y

∆Z

∆X

∗

∗

!

!

!

!

Electrical and optical characteristic curves

(mA)

Fig.1 Optical output vs.operating current

10

0

1

2

3

4

5

20

30

40

50

60

70

80

75

°C

70

°C

60

°C

40

°C

25

°C

0

°C

−10°C

(

°C)

010

20

-10

30

40

50

60

70

80

10

100

90

80

70

60

50

40

30

20

Fig.2 Dependence of threshold

current on temperature

ANGLE

(deg)

Fig.3 Far field pattern

-40

0

0.5

1.0

040

θ direction

θ direction

PACKAGE TEMPERATURE : Tc

(

°C)

-10

790

780

770

800

0

10 203040 50

80

60 70

Fig.4 Dependence of wavelength

on temperature

WAVELENGTH :

λ (nm)

775

780

785

790

°C

Fig.5 Dependence of emission

spectrum on optical output

(mA)

Fig.6 Monitor current vs.optical output

0.1

0.2

0.3

0.4

0.5

0

1

2

3

4

5