wavelengths
 

Multiline and complex filter coatings

Coating types
AR
  • VAR
  • DAR
  • TAR
  • BBAR
  • MAR
  • WAR
HR
  • HR
  • DHR
  • BBHR
  • MHR
  • WHR
  • Metal
FILTER
  • LP
  • SP
  • NF
  • MP
  • BP
  • REF

The growing laser market requires more and more complex coatings working simultaneously at many different wavelengths with different optical requirements.

Besides standard multi-line coatings descri­bed in previous chapters, e.g. "Combinations of harmonics" and "OPO", LASEROPTIK offers customized coatings.

For difficult multi-line coatings normally IBS will be the appropriate coating technique of choice as it com­­bines highest precision in film growth and thermal stability.

Besides transmission or reflection of course other optical properties like GD or GDD can be optimized, see item "Dispersive coatings".

 
Only the sky is the limit...
Even extraordinary wishes can be fulfilled, only the sky is the limit...

Sometimes it is necessary to use different filter coatings on a pair of substrates or on the front and rear surface of an optic.

The example above has a broadband long wave pass coated on the front and a gain flattener on the rear surface for superposition of the deuterium and halogen lamp spectra. As shown, the measured reflection (red line) complies with the computed values (black line). This proofs the high precision of the IBS-coating technique.

All values are given for standard coatings. Customized coatings available for all types.

Coating methods available:

EBEIADIBSMS

Examples

If not mentioned otherwise, all values and diagrams are given

... for the standard substrate material used in the described wavelength area (mostly Fused Silica or CaF2).

... without consideration of the rear surface.

... with EBE coating technique for a good cost-performance ratio.

Customized coatings are available for all types.

 

–––– dashed lines show the zoomed curve with the stated magnification

AR 389 + 461 + 633 + 650 + 689 + 813 + 914 + 1064 nm / 0°
[B-14280]AR 389 + 461 + 633 + 650 + 689 + 813 + 914 + 1064 nm / 0°

389 nm: R < 1%; 461 nm:  R < 0.4%; 633 nm + 650 nm +  689 nm + 813 nm + 914 nm + 1064 nm: R < 0.25%
(IBS-coating)

HR 393 nm + 397 nm + 422 nm + 729 nm + 854 nm + 866 nm / 0°
[B-19248]HR 393 nm + 397 nm + 422 nm + 729 nm + 854 nm + 866 nm / 0°

393 nm + 397 nm + 422 nm + 729 nm + 854 nm + 866 nm: R > 99.8%; T > 500ppm (IBS-coating)

PR 397 + 423 + 729 + 794 + 854 + 866 + 895 nm / 0°
[B-19486]PR 397 + 423 + 729 + 794 + 854 + 866 + 895 nm / 0°

397 + 423 nm: R = 99.7 ±0.1%; 729 nm: R = 99.97 +0.01 / -0.02% (best effort); 794 nm: R = 99.26 ±0.4%; 854 + 866 + 895 nm: R = 99.26 ±0.2% (IBS-coating)

PR 461 nm + 480 nm + 679 nm + 707 nm + 813 nm + 895 nm / 0°
[B-19475]PR 461 nm + 480 nm + 679 nm + 707 nm + 813 nm + 895 nm / 0°

461 nm: R = 99.7 ±0.13%; 480 nm: R = 99.7 ±0.12%;
679 nm: R = 99.7 ±0.1%; 707 nm: R = 99.7 ±0.13%;
813 nm: R = 99.7 ±0.1%; 895 nm: R = 99.26 ±0.3%
(IBS-coating)

R 10% 1064–1079 nm R 45% 1330 nm R 90% 1440 nm / 0°
[B-10328-01]R 10% 1064–1079 nm R 45% 1330 nm R 90% 1440 nm / 0°

1064–1079 nm: R ±2% vs. curve; 1320–1340 nm +
1430–1450 nm: R ±5% vs. curve (IBS-coating)

T 5% 500 nm linear to HT 800 nm / 45°
[B-14140-01]T 5% 500 nm linear to HT 800 nm / 45°

500 nm: T ±2%; linear progress with about (avg) ±2% vs. curve; 800 nm: T > 98% (IBS-coating)

HR 360–390 nm PR 410–680 nm HR 720–1100 nm / 0°
[B-14638]HR 360–390 nm PR 410–680 nm HR 720–1100 nm / 0°

360–390 nm: T < 1%; 410–680 nm: gain flattening filter;
720–1100 nm: T < 1% (IBS-coating)

HR 1190-1290 nm HT 1300-2000 nm / 45° p
[B-15755]HR 1190-1290 nm HT 1300-2000 nm / 45° p

1190-1290 nm: Rp,avg > 99.7%; 1300-2000 nm:
Rp,avg < 1%; Tilting ±15° shifts the edge by ±85nm
(IBS-coating)

R 50% 532 + 632 nm HT 808 nm R 50% 915 nm HR 1060 + 1550 nm / 45°
[B-16992]R 50% 532 + 632 nm HT 808 nm R 50% 915 nm HR 1060 + 1550 nm / 45°

532 nm + 632 nm: R ±3%; 808 nm: R < 2%; 915 nm: R ±3%; 1060 nm: R > 99.9%; 1550 nm: R > 98%
(IBS-coating)

HR 515 nm R 50% 630-660 nm HR 1030 nm HT 1400-2400 nm / 45°
[B-21306]HR 515 nm R 50% 630-660 nm HR 1030 nm HT 1400-2400 nm / 45°

515 nm: R > 99.7%; 630-660 nm: R ±20%; 1030 nm: R > 99.8%; 1400-2400 nm: R < 5% (IBS-coating)

HR 399 nm HT 486 nm HR 556 nm HT 680 + 759 nm / 30° s+p
[B-20695-01]HR 399 nm HT 486 nm HR 556 nm HT 680 + 759 nm / 30° s+p

399 nm: Rs,p > 99.5%; 486 nm: Rp < 2%, Rs < 3%;
556 nm: Rp > 99.7%, Rs > 99.9%; 680 nm: Rs,p < 2%;
759 nm: Rs,p < 2% (IBS-coating)

HT 460 nm + 525 nm HR 532 nm HT 630 nm HR 637 nm / 45°
[B-10107-01]HT 460 nm + 525 nm HR 532 nm HT 630 nm HR 637 nm / 45°

460 nm: Rp < 2%; 525 nm: Rp < 8%; 532 nm: Rs > 98.5%; 630 nm: Rp < 8%; 637 nm: Rs > 97% (IBS-coating)

HR 308 nm HT 332 nm HR 355 nm HT 387 nm / 2.3-9.5°
[B-17353]HR 308 nm HT 332 nm HR 355 nm HT 387 nm / 2.3-9.5°

308 nm: T < 0.1%; 332 nm: T > 80% (goal: T > 95%);
355 nm: T < 0.1%; 387 nm: T > 90% (goal: T > 97%)
(IBS-coating)

HR 399 nm HT 532–578 nm HR 660 + 759 nm HT 1064 nm / 45°
[B-13566]HR 399 nm HT 532–578 nm HR 660 + 759 nm HT 1064 nm / 45°

399 nm: R > 99.5%; 532–578 nm: Ravg < 0.5%; 660 + 759 nm: R > 99.8%; 1064 nm: R < 0.5%
(IBS-coating)

HT 399 nm HR 532 nm HT 556nm HR 578 + 649 + 759 nm / 45°
[B-19936]HT 399 nm HR 532 nm HT 556nm HR 578 + 649 + 759 nm / 45°

399 nm: R < 3.5%; 532 nm: R > 99%; 556 nm: R < 10% (best effort); 578 nm: R > 99%; 649 nm: R > 99.8%; 759 nm: R > 99.8%  (IBS-coating)

HT 461 nm HR 633 + 650 + 689 + 813 + 914 + 1064 nm / 0°
[B-15810]HT 461 nm HR 633 + 650 + 689 + 813 + 914 + 1064 nm / 0°

461 nm: T > 95%; 633 nm + 650 nm + 914 nm: R > 99.9%;
689 nm + 813 nm + 1064 nm: R > 99% (IBS-coating)

HT 630 nm HR 750–1470 nm HT 1535 nm HR 1600–1800 nm / 0°
[B-04390]HT 630 nm HR 750–1470 nm HT 1535 nm HR 1600–1800 nm / 0°

633 nm: T > 30%; 750–1470 nm: Tavg < 0.5%; 1535 nm: T > 90%; 1600–1800 nm: Tavg < 1% (IBS-coating)

HR 759 nm HT 770 nm / 17°
[B-19600]HR 759 nm HT 770 nm / 17°

759 nm: R > 97%; 770 nm: R < 14% (best effort, AOI tuning required ±3°) (IBS-coating)

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