Global Patent Index - EP 1064705 A1

EP 1064705 A1 2001-01-03 - HIGH-PERFORMANCE LASER COOLING DEVICE

Title (en)

HIGH-PERFORMANCE LASER COOLING DEVICE

Title (de)

HOCHWIRKSAME LASERKÜHLVORRICHTUNG

Title (fr)

DISPOSITIF DE REFROIDISSEMENT LASER A FORTE EFFICACITE

Publication

EP 1064705 A1 (FR)

Application

EP 00900579 A

Priority

  • FR 0000071 W
  • FR 9900336 A

Abstract (en)

[origin: FR2788635A1] The invention concerns a high-performance laser cooling device, for example for cooling systems such as low noise detection and amplification systems. The inventive device comprises for example a laser cooling material (MRL1) for laser cooling a system (SYS) thermally coupled with said material. The interaction of the material with a laser pump (PMP1) of predetermined frequency w1 results in the spontaneous isotropic emission of protons of frequency omega 1 identical to the frequency of the pump beam and photons of frequency omega 2 higher than frequency omega 1 of the pump beam, the emission of the latter protons causing the cooling material to be cooled. The inventive device further comprises recirculating means for sending back towards the laser cooling material (MRL1) the frequency omega 1 photons. In one particular embodiment, the recirculating means comprise a shell (COQ) spherical in shape, at the centre of which is placed the cooling material (MRL1), thermally insulated from the cooling material. The shell is coated with a treating coat (TRT1) reflecting the omega 1 frequency protons and with a coat (TRT2) converting the omega 2 frequency protons into omega 1 frequency protons, the converting coat covering the reflecting treatment coat (TRT1). The inventive device considerably enhances the cooling efficiency of laser cooling devices.

IPC 1-7 (main, further and additional classification)

H01S 3/04; F25B 23/00

IPC 8 full level (invention and additional information)

F25B 23/00 (2006.01); H01S 3/042 (2006.01)

CPC (invention and additional information)

H01S 3/042 (2013.01); F25B 23/00 (2013.01); H01S 3/0408 (2013.01)

Citation (search report)

See references of WO 0042683A1

Designated contracting state (EPC)

DE GB IT

EPO simple patent family

FR 2788635 A1 20000721; FR 2788635 B1 20011005; EP 1064705 A1 20010103; WO 0042683 A1 20000720

INPADOC legal status


2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION):

- Ref Legal Event Code: RBV

- Designated State(s): DE GB IT

2003-02-05 [18D] DEEMED TO BE WITHDRAWN

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- Effective date: 20020801

2001-10-04 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: THALES

- Ref Legal Event Code: RAP1

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000822

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE