Pulsed Laser Deposition

  Instrument Details  
A)Pulsed  Excimer Laser:

Make: Coherent
Model: Compex Pro
Specification: Wavelength: KrF (248nm), ArF (193nm)
Power: 700mJ (Maximum)
Frequency: 1-10Hz

B)  RHEED
Make: TorrRHEED TM from STAIB instruments, Germany
Model: RH 35
Specification: Wavelength: KrF (248nm), ArF (193nm)
Power: 700mJ (Maximum)

Frequency: 1-10Hz

 


  Working Principles   

Pulse Laser Techniques (PLD) uses high power laser pulses to melt, evaporate and ionize material from the surface of a target. This "ablation" event produces a transient, highly luminous plasma plume that expands rapidly away from the target surface. The ablated material is collected on an appropriately placed substrate upon which it condenses and the thin film grows. Applications of the technique range from the production of superconducting and insulating circuit components to improved wear and biocompatibility for medical applications. In spite of this widespread usage, the fundamental processes occurring during the transfer of material from target to substrate are not fully understood and are consequently the focus of much research.

Description: Pulsed Laser Deposition      In principle PLD is an extremely simple technique, which uses pulses of laser energy to remove material from the surface of a target, as shown schematically on the right.
The vaporized material, containing neutrals, ions, electrons etc., is known as a laser-produced plasma plume and expands rapidly away from the target surface Film growth occurs on a substrate upon which some of the plume material recondenses.                              

 

 

 

 

 


  Applications   
 

A) This is a Pulsed Excimer Laser based thin film deposition unit. The Excimer laser (Compex Pro made by Coherent Inc.) delivers a maximum of 700 mJ power at the wavelengths of 193 nm (ArF) and 248 nm (KrF) with a repetition rate of 10 Hz. The deposition chamber (Ms. Excel Instruments) is equipped with turbo pump (base 10–7 pressure ~ 10 mbar) and works under various gaseous environments. The substrate can be heated up to 900oC and it has six automated target carousel.

B) The  RHEED Gun in Pulsed Excimer Laser Deposition unit: For in situ analysis of the deposited film by laser ablation at the electron source energy ~ 35 KeV The instrument equipped with double differential pumping arrangement: To maintain pressure difference between the electron gun and the thin film deposition chamber.

          RHEED data analysis software: KSA-400 software
  User Instructions   
       
  1. A Requisition letter addressing In-charge Technical cell along with

    • Demand Draft in favour of S. N. Bose National Centre for Basic Sciences.
    • Cash payment after completion of the expt. 
    • Payment through Debit/Credit Card
    • Through wire/online fund transfer before the experiment ( see wire transfer details below)
  1. If you are not supposed to be present at the time of appointment please provide as much details as possible like 
          a. Target material, cleaned substrate (Oxide material only)
          b. Deposition Parameter in detail.
  2.  Once your Requisition letter along with DD will be received in Technical Cell then only you can be given an idea of tentative date of appointment. 
  1. The users will be informed about their date & time of slot by e-mail or phone call (Please provide email and contact details while booking for slot)
  1. The target and substrate should be dry and should withstand high vacuum (~ 10 -5Pa).
  1. The target size should be within 1”(Inch) and the side opposite the side of target and substrate should be flat (to enable sample mounting).
  2. The user is welcome to be present in the laboratory during deposition.

 

Payment Instruction:

 

  1. A Requisition letter addressing In-charge Technical cell along with
  2. Demand Draft in favour of S. N. Bose National Centre for Basic Sciences."
  3. Cash payment after completion of the expt. 
  4. Payment through Debit/Credit Card
  5. Wire transfer details  (see below details)


  Contact Us   

033 2335 5706/5707/5708, Extension:  372
technical-cell@bose.res.in
shakti@bose.res.in
   
 PLD Charges  


  University / College [1] National Lab/R &D [1] Industry[1]
Without providing target and substrate ₹5000/- ₹5000/- ₹ 7000/-


 

[1] Per substrate (in ₹)

 

The Demand Draft should be in favour of "S. N. Bose National Centre for Basic Sciences." 
Letter, DD & Samples send to "Technical cell, S. N. Bose National Centre for Basic Sciences, Kolkata- 700106


[2] Money Transfer Information:

National Electronic Fund Transfer (NEFT) Details for Money Transfer

1.Name of the Account Holder: S. N. Bose National Centre for Basic Sciences

2.Bank Account Number:089302000000220

3.Type of Account: Current Account

4.Bank Name: Indian Overseas Bank

5.Branch Name: Salt Lake City Branch

6.Complete Address of Branch: Block - EA, Salt Lake City, Sector - 1, opp. Labony Estate, Kolkata - 700064.

7.IFS Code of the Branch:IOBA0000893