wavelengths
 

Multiline 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:

EBEIADIPMSIBS

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

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)

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)

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 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)

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