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Photodigm Inc は自社工場での設計・製造を通して、多種・高品質の商品供給を維持しています。

2000年以降はDBR技術に特化し、こちらの分野でも専門性を高めています。

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895 nm laser diode (PDF)

Technology

  • DBR Single-Frequency Laser Chip
  • AlGaAs QW Active Layer
  • Epi designed for high reliability

Features

  • Used in atomic spectroscopy for cesium based applications.  It is certified to be resonant with the Cs D1 line.
  • Available in several package styles
  • Pulsed operation for spectral stability at short pulse lengths
  • High power for CW applications
  • High Slope Efficiency

 

Absolute Maximum Rating

Parameter

Symbol

Unit

Min

Max

Storage Temperature

TSTG

°C

0

80

Operating  Temperature

TOP

°C

5.0

70

CW Laser Forward Current, T=Top

IF

mA

200**

Pulsed Laser Forward Current, T=25°C,

IF

A

0.5

PW=300 ns, DC=10%

Laser Reverse Voltage

VR

V

0.0

Photodiode Forward Current 1/2/

IP

mA

5.0

Photodiode Reverse Voltage 1/2/

VR

V

20.0

Photodiode Dark Current, VR=10V, LD IF=0, 1/2/

ID

nA

50

TEC Current 1/2/

ITEC

A

-2.5

2.5

TEC Voltage 1/2/

VTEC

V

-6.0

6.0

Thermistor Current 1/2/

ITHRM

mA

1.0

Thermistor Voltage 1/2/

VTHRM

V

10

ESD (HBM)

V

500

External Back Reflection

dB

-14

Lead Soldering

Temperature, 10 sec. Max., 1/2/

°C

260

Fiber Pull Force 1/

N

5.0

Fiber Bend Radius 1/

mm

35

1/ Butterfly package 2/ TO8 package**Do not exceed drive current or operating power of supplied LIV

CW Characteristics at TC = 25°C unless otherwise specified

Parameter

Symbol

Unit

Min

Typ

Max

Center Wavelength

λc

nm

893

895

897

Optical Output Power @ LIV current

Po

mW

See Power Options Call-out

Slope Efficiency, 1/

ηd

W/A

0.3

0.36

Slope Efficiency

ηd

W/A

0.6

0.72

Threshold Current

Ith

mA

40

50

Laser Series Resistance

RS

Ω

2.5

3.5

Laser Forward Voltage

VF

V

2.0

2.5

Thermistor Resistance @

25°C, 1/2/

RT

10

Photodiode Dark Current, VR=10V,

LD IF=0, 1/2/

ID

nA

50

Laser Line Width

∆v

MHz

0.5

1.0

Beam Divergence @ FWHM

θװ X θ

º

6 X 32

8 X 34

Side Mode Suppression

Ratio

SMSR

dB

-30

Polarization Extinction

Ratio, 1/

PER

dB

-16

-19

Laser Polarization

TE

Mode Structure

Fundamental Mode

1/ Butterfly package  2/ TO-8 package

Handling Precautions

These devices are sensitive to ESD. When handling the module, grounded work area and wrist strap must be used. Always store in an antistatic container with all leads shorted together.

 

Package Type

CS / CM / T8 / BF

Minimum Power (mW)

40 ; 80 ; 120 ; 180 ; 240 or 280

 

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