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data sheet microchip MC-1064-90ps

Data sheet microchip MC-1064-90ps
microchip for pulsed laser emission at a wavelength λ = 1064 nm(data sheet rev. 3.2 2014-09-22)
MC – Microchip
MC-1064-90ps - microchip with 1064 nm laser emission and 90 ps pulse duration

Table of contents:
1.

Microchip description and applications.......................................................................................... 1

2.

Microchip parameters .................................................................................................................... 2

3.

Microchip laser setup..................................................................................................................... 5

4.

Mount Dimensions ......................................................................................................................... 6

1. Microchip description and applications
The Microchip (MC) consists of a saturable absorber mirror bonded with a Nd:YVO4 laser crystal. TheMC can be used to generate pulsed laser radiation at 1064 nm wavelength if pumped with a pump
diode at 808 nm. Possible application areas of this laser radiation are:

micromachininglight detection and ranging (LIDAR)

precision measurementsfrequency conversion

The main advantage of a laser build with this microchip is the pump power dependent repetition ratewith fixed pulse duration and pulse energy. By simply increasing the pump power at 808 nm therepetition rate - and consequently the average output power - will be increased proportionally startingfrom the laser threshold.

BATOP GmbH
Wildenbruchstraße 15
D-07745 Jena
Germany

Tel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.deDeutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00

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data sheet microchip MC-1064-90ps

2. Microchip parametersMC-1064-90ps
Optical Pump Parameters
Parameter at T=25°C

Min.

Typ.

Max.

Wavelength

806nm

808nm

810nm

Pump Power

70

150mW-200mW

300mW

Pump Spot Diameter

25µm

40µm

60µm

Fluorescent Lifetime

35 µs (3%)

Pump Absorption @ 808nm
Pump Power Density

85%
5 kW/cm

90%
295%
24 kW/cm2 *Lasing performance with 40µm pump spot size at 25°C
Parameter at T=25°C

Min.

Typ.

Max.

Laser Wavelength

1064.0nm

1064.3nm

1064.6nm

Laser Wavelength Drift

50 pm/100mW**

Beam Waist Diameter

60 µm

2100 µm

M

1.1

1.3

1.5

Pulse Energy

15 nJ

18 nJ

21 nJ

Pulse Duration

70ps

90ps

120ps

Differential Efficiency

8%10%

13%

Laseing Thresold

100 mW

110 mW

120 mW

Polarization Extinction Ratio

100

frep

75 kHz700 kHzPav (150mW)

3,0 mW4,0 mW5,0 mW

Pav (200mW)

7,5 mW9,0 mW

10,5 mW

The average output power P and the repetition frequency fR are a function of the optical pump power.
These dependencies are nearly linear above the laser threshold. The jitter of the repetition frequency
decreases with increasing pump power to about 2 %, whereas the pulse energy EP remains constant.

* Pump Power Density at 40 µm pump spot diameter and 300 mW pump power** Laser wavelength drift for 40µm pump spot diameter

BATOP GmbHWildenbruchstraße 15
D-07745 Jena
Germany

Tel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.deDeutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00

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data sheet microchip MC-1064-90psDependency of the average output power P on the pump power at 808 nm

Dependency of the repetition rate frep on the pump power at 808 nm

BATOP GmbH
Wildenbruchstraße 15D-07745 Jena
Germany

Tel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.deDeutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00

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data sheet microchip MC-1064-90psPulse duration tP

Pulse spectrum

BATOP GmbH
Wildenbruchstraße 15D-07745 Jena
Germany

Tel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.deDeutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00

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data sheet microchip MC-1064-90ps

Dependency of the relative frequency jitter on the repetition rate fR

3. Microchip laser setup
The microchip consists of a saturable absorber mirror (SAM) and a Nd:YVO4 laser crystal. Because theSAM is not transparent, the laser setup must be in reflection mode. For optical pumping a multi-modelaser diode with about 500 mW cw output power at 808 nm wavelength is sufficient. The proposedlaser setup using two lenses and a dichroic mirror is shown below.
dichroic
mirrormicrochipcw diode laser
808 nmcollimating
lenspulsed output
1064 nmfocusing
lens
heat sink

BATOP GmbH
Wildenbruchstraße 15
D-07745 Jena
GermanyTel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.deDeutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00

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data sheet microchip MC-1064-90ps

The dichroic mirror has a high reflectance for the laser output at1064 nm wavelength and a high transmittance for the 808 nm pumplight .
The laser output is collimated and nearly diffraction limited, if thepump spot diameter in the laser crystal of the microchip is smallenough. Typical pump spot diameter values are between 40 µm and80 µm.
The arrow shows the polarization direction of the emitted
light (parallel to c-axis)

4. Mount Dimensions

BATOP GmbH
Wildenbruchstraße 15
D-07745 Jena
Germany

Tel: +49 3641 634009 - 0
Fax: +49 3641 634009 - 20
E-mail: info@batop.de

Deutsche Bank Jena
VAT Reg. No: DE 813698804
Bank Code: 82070024
Tax Acc. No: 162/106/01639
Account No: 3922655
Local Court Jena HRB 112769
IBAN: DE49 8207 0024 0392 2655 00