OptistatTM Product Family

OptistatTM Product Family

Optical cryostats for spectroscopy

Optistat

N e w l o o k • N e w f e at u r e s • N e w a c c e s s o r i e s • N e w s o f t wa r e

New accessories including a new range

of electronics

Which Optistat is right for you?

Optistat family

The Optistat model of choice will depend on the base temperature, cooling technology and sample environment required for your

experiments. If our standard range doesn’t suit your requirements, Oxford Instruments can also provide you with tailored solutions.

Our user-friendly, compact and efficient Optistat cryostats offer a wide range of options to suit most spectroscopy applications. they provide a wide temperature range (from 1.5 k up to 500 k) while providing excellent optical access.

temperature range cooling technology sample environment

OptistatCF2 2.3 – 500 K Helium or nitrogen Static or dynamic exchange gas

OptistatCF-V2 2.3 – 500 K Helium or nitrogen Vacuum

OptistatDN2 77 – 500 K Nitrogen only Static exchange gas

OptistatDN-V2 77 – 500 K Nitrogen only Vacuum

OptistatSXM 1.6 – 300 K Helium or nitrogen Dynamic exchange gas

OptistatAC-V 12 2.8 – 325 K Cryogen-free Vacuum

OptistatAC-V 14 2.8 – 325 K Cryogen-free Vacuum

OptistatPT-BL 3.5 – 300 K (4 K model) 1.5 – 300 K (1.5 K model)

Cryogen-free Vacuum

OptistatPT-TL 3.5 – 300 K (4 K model) 1.5 – 300 K (1.5 K model)

Cryogen-free Static exchange gas

optic• UV/ visible reflectivity & absorption

• FTIR spectroscopy

•THz spectroscopy

•Photoluminescence

•Electroluminescence

•Raman scattering

•Electrical transport measurements

•Photovoltage/current

•Ultrafast spectroscopy

•SPM, STM, AFM

for magneto-optical

applications, see Spectromag

product guide

typical applications:

Table 1: Advantages and trade offs of each cooling technology for the Optistat range of cryostats

Optistat family

Advantages and trade offs

cryostat type advantages trade offs Product

Helium continuous flow cryostat

•Small size for easy integration into spectrometers

•Low base temperature (2.3 K)•Can be used with nitrogen

•Continuous use of a helium transfer line and helium dewar

OptistatCF2OptistatCF-V2

Helium bath cryostat

•More efficient use of cryogens for measurements lasting more than one day

•Low base temperature (1.6 K)

•Larger physical size and weight OptistatSXM2

Nitrogen bath cryostat

•Small size for easy integration into spectrometers

•Low running cost•No need for external dewar

and transfer tube

•Limited base temperature (77 K) OptistatDN2OptistatDN-V2

cryogen-free cryostat

•No need for liquid cryogen•Ease of use•Low running cost

•Larger physical size and weight•Compressor requires servicing•Higher cost

OptistatAC-V 12OptistatAC-V 14OptistatPT-BL and TL

sample space environment

advantages trade offs Product

static exchange gas (circulating cryogen doesn’t come into the sample space)

•Rapid sample change (via top loading probe)

•Homogeneous sample cooling

•No liquid in the optical beam path

•More optical windows•Larger working distance from

sample to external optics

OptistatCF2OptistatDN2OptistatPT-TL

Dynamic exchange gas (circulating cryogen exiting the heat exchanger flows into thesample space)

•Rapid sample change (via top loading probe)

•Homogeneous sample cooling ideal for low conductivity sample

•Faster cool down times•Cryostat can be operated

in single shot

•More optical windows•Larger working distance from

sample to external optics•Presence of liquid in the

optical beam path

OptistatCF2 dynamic optionOptistatSXM2

Vacuum •Fewer windows in the optical beam path

•Larger sample space•Short working distance

to room temperature

•Slower sample change•Potential for temperature

gradient across the sample

OptistatCF-V2OptistatDN-V2OptistatAC-VOptistatPT-BL

Table 2: Advantages and trade offs for the different sample environments

heliumOptistatCF2

continuous flow helium cryostat, sample in exchange gas

• Wide temperature range:

from 2.3 K to 500 K

• Quick sample change in less

than 5 minutes via top-loading

sample probe

• Superb optical access (f/1) for

measurements requiring light

collection

•Optimised clear beam throughput

(15 mm diameter aperture)

allows a large illumination area

for measurements involving the

detection of low intensity light

•The most economical use of cryogens

on the market: less than 0.55 L/h at

4.2 K using a Low Loss Transfer tube

• Versatile: wide range of sample

holders/rods including liquid cuvette

for liquid samples and simple/precise

height adjust/rotate sample rod

•Compact size allowing easy

integration into commercial

spectrometers

• Electrical measurements via 10-pin

electrical feed wire to heat exchanger

and/or wired on coax connectors

• Can be operated in pull mode (using

a gas flow pump to pull the helium

from a storage dewar to the sample

space) or push mode (by pressurising

the storage dewar)

Optistat family

This helium cryostat is ideal for experiments requiring high sample throughput

and low conductivity samples.

specifications

Model OptistatCF2 static used in

‘pull’ mode

OptistatCF2 static used in

‘push’ mode

OptistatCF2 dynamic in ‘pull’ mode

OptistatCF2 dynamic used in ‘push’ mode

Temperature range 2.3 – 500 K* 4.2 – 500 K* 2.3 – 500 K*1.6 – 500 K* in single shot

4.2 – 500 K*

Temperature stability ± 0.1 K (measured over 10 min period)

Maximum sample space 20 mm diameter

Sample holder dimensions 19 mm wide x 30 mm long (optical sample holder version has a 15 mm aperture)

Cool down from ambient to 4.2 K (mins)

35

All specifications refer to the base model cryostat with 2 sets of Spectrosil B window used with an LLT transfer tube, EPS 40 (40 m3/hr helium pumping system) and a MercuryiTC temperature controller. *For 500 K operation, high temperature sapphire inner windows are required.

the lowest helium consumption

on the market

• Two models to choose from: static or

dynamic exchange gas. (see p3)

For more information please visit:

www.oxinst.com/optistatcf2

www.oxinst.com/optistatcf2

OptistatCF-V2

continuous flow helium cryostat, sample in vacuum


from 2.3 K to 500 K

• Large sample space enabling studies

of sample with a wide range of size

and geometry

• Superb optical access (f/0.9)

for measurements requiring

light collection

•Optimised clear beam throughput





•The most economical use of cryogens

on the market: less than 0.45 L/h at

4.2 K using a Low Loss Transfer tube

• No cold windows enabling the use of

any window material above 300 K

• Demountable radiation

shield windows to maximise

transmission intensity

• Can be operated in pull mode

(using a gas flow pump to pull the

helium from a storage dewar to

the sample space) or push mode

(by pressurising the storage dewar)

spectro

Optistat family

This helium cryostat is well suited for experiments requiring a large sample space

and minimum number of windows in the optical beam path (reducing reflective

losses). It is also a very versatile instrument as its tail is interchangeable between

MicrostatHe2 and MicrostatHe2 Rectangular tail, ideal for microscopy and

magneto-optical Kerr effect applications.

specifications

Model OptistatCF-V2 used in ‘pull’ mode OptistatCF-V2 used in ‘push’ mode

Temperature range 2.3 – 500 K 4.2 – 500 K


Maximum sample space(space within radiation shield)

30 mm wide x 58 mm long

Sample holder dimensions 20 mm wide x 50 mm long (optical sample holder version has a 12.5 mm aperture)

Sample change time (mins) 60

Cool down from ambient to 4.2 K (mins)

10

• Electrical measurements via

10-pin electrical feed wire to

heat exchanger and/or wired

on coax connectors



spectrometers

All specifications refer to the base model cryostat with 2 sets of Spectrosil B window used with an LLT transfer tube, EPS 40 (40 m3/hr helium pumping system) and a MercuryiTC temperature controller.

the lowest helium consumption

on the market


www.oxinst.com/optistatcfV2

www.oxinst.com/optistatCFV2

nitrogenOptistatDN2

Nitrogen bath cryostat, sample in exchange gas

This nitrogen cryostat is ideal for experiments which require 77 K base temperature,

high sample throughput and for samples which are difficult to cool by conduction.

Its small footprint is ideal in laboratory where space is limited. It doesn’t require

any external dewar or transfer tube.

Optistat family


from 77 K to 500 K

• Quick sample change in less


sample probe

• 15 hours cryogen hold time before

refills required providing the

convenience of a full working

day operation

• Superb optical access (f/1)


light collection

• Electrical measurements via 10-pin

electrical feed wire to heat exchanger

and/or wired on coax connectors

• Optimised clear beam throughput








height adjust/rotate sample rods



spectrometers

smallest footprint.500 k now available

as standard

specifications

Temperature range 77 – 500 K*



Sample holder dimensions 19 mm wide x 30 mm long (optical sample holder version has a 15 mm aperture)

Cool down from ambient to 77 K (mins) 25

Liquid nitrogen capacity 1.2 L

Hold time at 77 K ≥ 15 hours


www.oxinst.com/optistatDN2

*For 500 K operation, high temperature sapphire inner windows are required.

www.oxinst.com/optistatDN2

nitrogennitro

OptistatDN-V2

Optistat family

This nitrogen cryostat is ideal for experiments which require 77 K base temperature,

a large sample space and a minimum number of windows in the optical beam path

thus reducing reflective losses.


from 77 K to 500 K



and geometry

• 15 hours cryogen hold time before

refills required providing the

convenience of a full working

day operation

• Superb optical access (f/1)


light collection




on coax connectors






• No cold windows enabling the use

of any window material above 300 K



spectrometers

smallest footprint.Large sample space

Nitrogen bath cryostat, sample in vacuum

specifications

Temperature range 77 – 500 K



Sample holder dimensions 20 mm wide x 50 mm long


Cool down from ambient to 77 K (mins) 20

Liquid nitrogen capacity 1.2 L

Hold time at 77 K ≥ 15 hours


www.oxinst.com/optistatDNV2

www.oxinst.com/optistatDNV2

HELIUMOptistatSXM2

low vibration helium bath cryostat, sample in exchange gas

This high stability helium bath cryostat is ideal for low-vibration optical spectroscopy

and nano-scale microscopy. It offers a low base temperature (1.6 K), low levels of

vibration and fast sample change. The sample is cooled by a dynamic exchange gas

fed from an integral liquid helium reservoir. Its small footprint is ideal in laboratory

where space is limited. It doesn’t required any external dewar or transfer tube.

Optistat family


from 1.6 to 300 K

•Excellent control and stability of the

sample temperature enabled using

the dynamic exchange gas principle

• Low vibration design for applications

requiring high levels of mechanical

stability including Scanning Probe

Microscopy (SPM), Near-field

Scanning Optical Microscopy

(NSNOM) and Atomic Force

Microscopy (AFM). The large

sample space (49 mm) enables

the integration of probe heads

•Quick sample change in less


sample probe

• Efficient cryogenic design provides

the convenience of consistent low

temperature operation over

a working day

• Generous optical access (f/2.2)

for the radial windows




height adjust/rotate sample rod

specifications

Temperature range 1.6 – 300 K




Cool down from ambient to 4.2 K (mins) 25

Liquid helium capacity 4 L

Hold time at 4.2 K ≥ 10 hours


www.oxinst.com/optistatsXM2

•Compact design for use on

optical tables


10-pin electrical feed wire to heat

exchanger and/or wired on coax

connectors

No liquid nitrogen used to minimise

vibration

www.oxinst.com/optistatSXM2

HELIUMCRYOFREE

OptistatAC-V

Optistat family

This cryostat is capable of achieving sample temperatures as low as 2.8 K without

the need for liquid helium. This brings significant benefits in terms of running cost

and ease of use.


from 2.8 K to 325 K

• Two models to choose from

depending on your cooling power

requirements

• Low vibration using a Pulse Tube

Refrigerator. Typical displacement

amplitudes on the second stage

heat exchanger in the radial

and axial directions are typically

7 and 12 micrometers respectively



and geometry

• Low running costs


(12.7 mm diameter aperture)






heat exchanger

No liquid helium required and easy

to use2.8 k cryofree® cryostat, sample in vacuum

specifications

Model OptistatAC-V 12 OptistatAC-V 14

Temperature range 2.8 – 325 K


Sample holder dimensions 20 mm wide x 50 mm long

Cool down from ambient to 4 K (mins) 90 60

Typical cooling power (W) 0.25 [email protected] K10 W@65 K

0.5 [email protected] K25 W@65 K

f number 2.4

Power consumption (kW)Air/water cooled compressor

3.5/3.3 5.3/4.8

Mains power requirements 200, 208/230 VAC 1 phase, 60 Hz

200, 220/240 VAC 1 phase, 50 Hz

200, 220/230 or 460 VAC 3 phase, 60 Hz

200/220 or 380/420 VAC 3 phase, 50 Hz

Magnet options available.


www.oxinst.com/optistatac-V

www.oxinst.com/optistatAC-V

HELIUMOptistatPT

1.5 k cryofree® optical cryostat sample in vacuum or exchange gas

This cryofree-cryostat achieves temperatures down to 1.5 K without the need for

liquid helium. It is the cryostat of choice for applications such as detector cooling

requiring low vibration, a low base temperature and a large sample space.

Optistat family


from 1.5 to 300 K.

4 K base temperature models

are also available

• Versatile: sample environment

available as vacuum or exchange gas

• Top-loading and bottom-loading

systems available

• Fast cool down time:

1.5 K in less than 6 hours

• Low vibration using a Pulse Tube

Refrigerator. The rotary valve in the

cold head directs the helium gas

in and out the expansion tubes

dropping the temperature to

2.8 K without the use of displacers




on coax connectors

specifications

cryostat type BL-4 BL-1.5 tl-4 tl-1.5

Temperature range 3.5 – 300 K 1.5 – 300 K 3.5 – 300 K 1.5 – 300 K

Sample loading Bottom-loading Top-loading

Sample environment Vacuum Exchange gas

Sample space size 50 mm or 100 mm 30 mm or 50 mm

PTR model SHI 1W cooling power at 4 K

System cool down <4 hours <6 hours <4 hours <6 hours

Compressor Water cooled, 3 phase, 8.5 kW

Low base temperature and easy to use

Magnet options available.


www.oxinst.com/optistatPt

www.oxinst.com/optistatPT

HELIUMoptic

The Optistat System

Optistat family

system components designed for optimum cryostat performance

sample holder and rod options

We offer two types of sample holders.

The plain sample holder is used for

reflection experiments and the optical

one for transmission.

For liquid samples, a liquid cuvette

sample holder is available.

with the new Mercury electronics and oxsoft iDk software, you have

new levels of control! find out more at www.oxinst.com/mercuryfull system integration and control

New intelligent cryogenic environment controller

Easy monitoring and control of the

sample stage

The MercuryiTC controller combines

several instruments into one allowing

temperature control at the heat

exchanger and gas flow control as

well as an extra sensor channel for

thermometry measurement directly

at the sample stage. Everything can

be accessed through touch screen

front panel or remotely via Labview

compatible Oxsoft IDK software.

Example OptistatCF2: You can control

the temperature with a sensor and

heater at the heat exchanger, monitor

and control the gas flow, AND have an

extra sensor channel to measure sample

temperature.

New Oxsoft IDK instrument development kit software

With the new Oxsoft IDK, you have

new levels of control. You can design

remote control and configuration

programs and integrate your system

into your preferred experiment control

architecture.

Liquid cuvette, optical and plain sample holders.

For exchange gas cryostats, we can

supply sample rods allowing a precise

position of your sample.

The simple height adjust and rotate

sample rod provides sliding adjustment

with locking screws to hold a fixed

position. The range of vertical motion is

32 mm. Positioning accuracy os 0.5 mm

(height) and 1o (rotation).

The precision height and adjust rotate

sample rod provides height adjust with

a resolution of 10 µm and a goniometer

for setting the rotation angle with a

resolution of 12 minutes.

From left to right, precision height and adjust rotate and standard sample rods. Can be supplied with double sample holder for reference measurements.

spectro

www.oxford.instruments.com/optistat for more information

This publication is the copyright of Oxford Instruments plc and provides outline information only, which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or regarded as the representation relating to the products or services concerned. Oxford Instruments’ policy is one of continued improvement. The company reserves the right to alter, without notice the specification, design or conditions of supply of any product or service. Oxford Instruments acknowledges all trademarks and registrations. © Oxford Instruments plc, 2012. All rights reserved. Part no: OINS/OPTISTAT/2012/02

oxford instruments

Nanoscience

For more information please email:

[email protected]

uk

Abingdon, Oxfordshire

Tel: +44 1865 393 200

china

Shanghai

Tel: +86 21 6490 8280

Germany

Wiesbaden

Tel: +49 6122 937 171

italy

Pieve Emanuele, Milan

Tel: +39 335 7378794

Japan

Tokyo

Tel: +81 3 5245 3261

usa

Concord, MA

Tel: +1 978 369 9933

www.oxford-instruments.com

Cryogenic spares and accessories

On the Optistat range of optical cryostats, all windows are demountable and may be

exchanged by the customer at a later date for measurements over different regions of the

optical spectrum. Up to five sets of windows can be provided (four radial; one axial). We

can provide ‘wedge’ (non-parallel faces) windows and anti-reflection coatings, to limit the

reflection of windows. The materials selected will be determined by the wavelength and

intensity of the radiation and whether or

not beam polarisation is required.

Wav

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(µm)

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. 4. 5 .6

.7

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9

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20

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40506070

80

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100

200

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400

500

600

70

080

0

900

1000

Wavenumbers

(cm-1 )

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10,000

2,50

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1000250

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ULTRA- VI O LE TV IS I BL E

NEA RI R

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RIR

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Spectrosil B

Spectrosil WF

Sapphire

Calcium Flouride

Crystalline Quartz

Polypropylene

KRS 5

Zinc Selenide

Polythene

MylarTM

Crystalline Quartzbelow 80 K

Sapphirebelow 80 K

Spectrosil B

Spectrosil WF

Sapphire

Calcium Flouride

Crystalline Quartz

Polypropylene

KRS 5Zinc Selenide

Polythene

Mylar

TM

Crystalline Quartz below 80 K

Sapphire below 80 K

Polypropylene

oiDirect cryospares

We offer an extensive range of

accessories for your cryostats. Please visit

www.cryospares.com to find out more.

Wav

e length

(µm)

.3

. 4. 5 .6

.7

.8

.9

1

2

3

45

67

8

9

10

20

30

40506070

80

90

100

200

300

400

500

60

07

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80

0

90

0

1000

Wav

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250

150

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Spectrosil B

Spectrosil WF

Sapphire

Calcium Flouride

Crystalline Quartz

Polypropylene

KRS 5

Zinc Selenide

Polythene

MylarTM

Crystalline Quartzbelow 80 K

Sapphirebelow 80 K

Spectrosil B

Spectrosil WF

Sapphire

Calcium Flouride

Crystalline Quartz

Polypropylene

KRS 5Zinc Selenide

Polythene

Mylar

TM

Crystalline Quartz below 80 K

Sapphire below 80 K

Polypropylene

extensive choice of windows to suit your experiment’s needs exchangeable

windows

Documents

OptistatTM Product Family